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Article

Agazzi, L. and Akça, I. and Aravazhi, S. and Ay, F. and Bernhardi, E.H. and Çivitci, F. and Dalfsen, K. van and Dijkstra, M. and Garcia Blanco, S.M. and Geskus, D. and Hammer, M. and Hoekstra, H.J.W.M. and Hollink, A.J.F. and Ismail, N. and Pham, S. Van and Ridder, R.M. de and Sengo, G. and Wörhoff, K. and Pollnau, M. (2011) Integrated optical microsystems: guiding light into the future. Focus Magazine, 41 (4). pp. 10-13.

Agazzi, L. and Wörhoff, K. and Pollnau, M. (2013) Energy-transfer-upconversion models, their applicability and breakdown in the presence of spectroscopically distinct ion classes: a case study in amorphous $Al_2O_3:Er^{3+}$. Journal of physical chemistry C, 117 (13). pp. 6759-6776. ISSN 1932-7447

Agazzi, Laura and Bernhardi, Edward H. and Wörhoff, Kerstin and Pollnau, Markus (2012) Impact of luminescence quenching on relaxation-oscillation frequency in solid-state lasers. Applied physics letters, 100 (1). 011109. ISSN 0003-6951

Agazzi, Laura and Bradley, Jonathan D.B. and Dijkstra, Meindert and Ay, Feridun and Roelkens, Gunther and Baets, Roel and Wörhoff, Kerstin and Pollnau, Markus (2010) Monolithic integration of erbium-doped amplifiers with silicon-on-insulator waveguides. Optics Express, 18 (26). pp. 27703-27711. ISSN 1094-4087

Agazzi, Laura and Wörhoff, Kerstin and Kahn, Andreas and Fechner, Matthias and Huber, Günter and Pollnau, Markus (2013) Spectroscopy of upper energy levels in an $Er^{3+}$-doped amorphous oxide. Journal of the Optical Society of America B: Optical Physics, 30 (3). pp. 663-677. ISSN 0740-3224

Akca, B.I. and Doerr, C.R. and Sengo, G. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2012) Broad-spectral-range synchronized flat-top arrayed-waveguide grating applied in a 225-channel cascaded spectrometer. Optics express, 20 (16). pp. 18313-18318. ISSN 1094-4087

Akca, B.I. and Nguyen, V.D. and Kalkman, J. and Ismail, N. and Sengo, G. and Sun, Fei and Driessen, A. and Leeuwen, A.G.J.M. van and Pollnau, M. and Worhoff, K. and Ridder, R.M. de (2012) Toward spectral-domain optical coherence tomography on a chip. IEEE journal of selected topics in quantum electronics, 18 (3). 1223 - 1233. ISSN 1077-260X

Akca, B.I. and Povazay, B. and Alex, A. and Wörhoff, K. and Ridder, R.M. de and Drexler, W. and Pollnau, M. (2013) Miniature spectrometer and beam splitter for an optical coherence tomography on a silicon chip. Optics express, 21 (14). pp. 16648-16656. ISSN 1094-4087

Akca, B.I. and Sengo, G. and Pollnau, M. and Driessen, A. and Wörhoff, K. and Ridder, R.M. de (2012) Flat-focal-field integrated spectrometer using a field-flattening lens. Optics Letters, 37 (20). pp. 4281-4283. ISSN 0146-9592

Akça, Imran B. and Chang, Lantian and Sengo, Gabriel and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus (2012) Polarization-independent enhanced-resolution arrayed-waveguide grating used in spectral-domain optical low-coherence reflectometry. IEEE Photonics Technology Letters, 24 (10). pp. 848-850. ISSN 1041-1135

Ay, Feridun and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus (2012) Focused-ion-beam nanostructuring of Al$_{2}$O$_{3}$ dielectric layers for photonic applications. Journal of Micromechanics and Microengineering, 22 (10). p. 105008. ISSN 0960-1317

Bernhardi, E.H. and Khan, M.R.H. and Roeloffzen, C.G.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2012) Photonic generation of stable microwave signals from a dual-wavelength $Al_2O_3:Yb^{3+}$ distributed-feedback waveguide laser. Optics Letters, 37 (2). pp. 181-183. ISSN 0146-9592

Bernhardi, E.H. and Lu, Q. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Monolithic Distributed Bragg Reflector Cavities in Al2O3 with Quality Factors Exceeding 106. Photonics and Nanostructures . ISSN 1569-4410

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Agazzi, L. and Khan, M.R.H. and Roeloffzen, C.G.H. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2010) Ultra-narrow-linewidth, single-frequency distributed feedback waveguide laser in Al2O3:Er3+ on silicon. Optics Letters, 35 (14). pp. 2394-2396. ISSN 0146-9592

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Highly efficient, low-threshold monolithic distributed-Bragg-reflector channel waveguide laser in Al$_{2}$O$_{3}$:Yb$^{3+}$. Optics Letters, 36 (5). pp. 603-605. ISSN 0146-9592

Bernhardi, E.H. and Werf, K.O. van der and Hollink, A.J.F. and Wörhoff, K. and Ridder, R.M. de and Subramaniam, V. and Pollnau, M. (2013) Intra-laser-cavity microparticle sensing with a dual-wavelength distributed-feedback laser. Laser & photonics reviews, 7 (4). pp. 589-595. ISSN 1863-8899

Bradley, J.D.B. and Agazzi, L. and Geskus, D. and Ay, F. and Wörhoff, K. and Pollnau, M. (2010) Gain bandwidth of 80 nm and 2 dB/cm peak gain in Al2O3:Er3+ optical amplifiers on silicon. Journal of the Optical Society of America B (Optical physics), 27 (2). pp. 187-196. ISSN 0740-3224

Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2007) Fabrication of low-loss channel waveguides in Al2O3 and Y2O3 layers by inductively coupled plasma reactive ion etching. Applied physics B: Lasers and optics, 89 (2-3). pp. 311-318. ISSN 0946-2171

Bradley, J.D.B. and Stoffer, R. and Agazzi, L. and Ay, F. and Wörhoff, K. and Pollnau, M. (2010) Integrated $Al_2O_3:Er^{3+}$ ring lasers on silicon with wide wavelength selectivity. Optics Letters, 35 (1). pp. 73-75. ISSN 0146-9592

Bradley, Jonathan D.B. and Costa e Silva, Maria and Gay, Mathilde and Bramerie, Laurent and Driessen, Alfred and Wörhoff, Kerstin and Simon, Jean-Claude and Pollnau, Markus (2009) 170 GBit/s transmission in an erbium-doped waveguide amplifier on silicon. Optics Express, 17 (24). pp. 22201-22208. ISSN 1094-4087

Bradley, Jonathan D.B. and Stoffer, Remco and Bakker, Arjen and Agazzi, Laura and Ay, Feridun and Wörhoff, Kerstin and Pollnau, Markus (2010) Integrated Al2O3:Er3+ zero-loss optical amplifier and power splitter with 40 nm bandwidth. IEEE Photonics Technology Letters, 22 (5). pp. 278-280. ISSN 1041-1135

Dekker, R. and Klunder, D.J.W. and Borreman, A. and Diemeer, M.B.J. and Wörhoff, K. and Driessen, A. and Stouwdam, J.W. and Veggel, F.C.J.M. van (2004) Stimulated emission and optical gain in LaF3:Nd nanoparticle-doped polymer-based waveguides. Applied Physics Letters, 85 (25). pp. 6104-6106. ISSN 0003-6951

Geskus, D. and Aravazhi, S. and Bernhardi, E. and Grivas, C. and Harkema, S. and Hametner, K. and Günther, D. and Wörhoff, K. and Pollnau, M. (2009) Low-threshold, highly efficient $Gd^{3+}$, $Lu^{3+}$ co-doped $KY(WO_4)_2:Yb^{3+}$ planar waveguide lasers. Laser Physics Letters, 6 (11). pp. 800-805. ISSN 1612-2011

Geskus, D. and Aravazhi, S. and Grivas, C. and Wörhoff, K. and Pollnau, M. (2010) Microstructured KY(WO4)2:Gd3+, Lu3+, Yb3+ channel waveguide laser. Optics Express, 18 (8). pp. 8853-8858. ISSN 1094-4087

Geskus, Dimitri and Aravazhi, Shanmugam and Wörhoff, Kerstin and Pollnau, Markus (2010) High-power, broadly tunable, and 
low-quantum-defect KGd1-xLux(WO4)2:Yb3+ channel waveguide lasers. Optics Express, 18 (25). pp. 26107-26112. ISSN 1094-4087

Hussein, M.G. and Wörhoff, K. and Sengo, G. and Driessen, A. (2007) Reduction of hydrogen-induced optical losses of plasma-enhanced chemical vapor deposition silicon oxynitride by phosphorus doping and heat treatment. Journal of Applied Physics, 101 (2). 023517/1-023517/6. ISSN 0021-8979

Hussein, M.G. and Wörhoff, K. and Sengo, G. and Driessen, A. (2007) Optimization of plasma-enhanced chemical vapor deposition silicon oxynitride layers for integrated optics applications. Thin Solid Films, 515 (7-8). pp. 3779-3786. ISSN 0040-6090

Ismail, N. and Choo-Smith, L.P. and Wörhoff, K. and Driessen, A. and Baclig, A.C. and Caspers, P.J. and Puppels, G.J. and Ridder, R.M. de and Pollnau, M. (2011) Raman spectroscopy with an integrated arrayed-waveguide grating. Optics Letters, 36 (23). pp. 4629-4631. ISSN 0146-9592

Ismail, N. and Sun, Fei and Sengo, Gabriël and Wörhoff, Kerstin and Driessen, Alfred and Ridder, René M. de and Pollnau, Markus (2011) Improved arrayed-waveguide-grating layout avoiding systematic phase errors. Optics Express, 19 (9). pp. 8781-8794. ISSN 1094-4087

Ismail, Nur and Akca, Bakiye Imran and Sun, Fei and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus and Driessen, Alfred (2010) Integrated approach to laser delivery and confocal signal detection. Optics Letters, 35 (16). pp. 2741-2743. ISSN 0146-9592

Ismail, Nur and Sun, Fei and Wörhoff, Kerstin and Driessen, Alfred and Ridder, René M. de and Pollnau, Markus (2010) Excitation and light collection from highly scattering media with integrated waveguides. IEEE Photonics Technology Letters, 23 (5). pp. 278-280. ISSN 1041-1135

Ismail, Nur and Çivitci, Fehmi and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus and Driessen, Alfred (2011) Efficiency of integrated waveguide probes for the detection of light backscattered from weakly scattering media. Applied Optics, 50 (6). pp. 935-942. ISSN 0003-6935

Kahn, Andreas and Heinrich, Sebastian and Kühn, Henning and Petermann, Klaus and Bradley, Jonathan D.B. and Wörhoff, Kerstin and Pollnau, Markus and Huber, Günther (2009) Low threshold monocrystalline $Nd:{(Gd,Lu)_2O_3}$ channel waveguide laser. Optics Express, 17 (6). pp. 4412-4418. ISSN 1094-4087

Kahn, Andreas and Kühn, Henning and Heinrich, Sebastian and Petermann, Klaus and Bradley, Jonathan D.B. and Wörhoff, Kerstin and Pollnau, Markus and Kuzminykh, Y. and Huber, G. (2008) Amplification in epitaxially grown $Er:(Gd, Lu)_2O_3$ waveguides for active integrated optical devices. Journal of the Optical Society of America B: Optical Physics, 25 (11). pp. 1850-1853. ISSN 0740-3224

Khan, Muhammad R.H. and Bernhardi, E.H. and Marpaung, David A.I. and Burla, Maurizio and Ridder, René M. de and Wörhoff, Kerstin and Pollnau, Markus and Roeloffzen, Chris G.H. (2012) Dual-frequency distributed feedback laser with optical frequency locked loop for stable microwave signal generation. IEEE photonics technology letters, 24 (16). pp. 1431-1433. ISSN 1041-1135

Kühn, Henning and Heinrich, Sebastian and Kahn, Andreas and Petermann, Klaus and Bradley, Jonathan D.B. and Wörhoff, Kerstin and Pollnau, Markus and Huber, Günter (2009) Monocrystalline $Yb^{3+}:(Gd,Lu)_2O_3$ channel waveguide laser at 976.8 nm. Optics letters, 34 (18). pp. 2718-2720. ISSN 0146-9592

Lagali, Neil S. and Paiam, Mohammad R. and MacDonald, Robert I. and Wörhoff, Kerstin and Driessen, Alfred (1999) Analysis of Generalized Mach–Zehnder Interferometers for Variable-Ratio Power Splitting and Optimized Switching. Journal of Lightwave Technology, 17 (12). pp. 2542-2550. ISSN 0733-8724

Moret, M.P. and Devillers, M.A.C. and Wörhoff, K. and Larsen, P.K. (2002) Optical properties of PbTiO3, PbZrxTi1−xO3, and PbZrO3 films deposited by metalorganic chemical vapor on SrTiO3. Journal of Applied Physics, 92 (1). pp. 468-474. ISSN 0021-8979

Nguyen, V. Duc and Akca, B. Imran and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus and Leeuwen, Ton G. van and Kalkman, Jeroen (2011) Spectral domain optical coherence tomography imaging with an integrated optics spectrometer. Optics Letters, 36 (7). pp. 1293-1295. ISSN 0146-9592

Peruzzo, Albert and Lobino, Mirko and Matthews, Jonathan C. F. and Matsuda, Nobuyuki and Politi, Alberto and Poulios, Konstantinos and Zhou, Xiao-Qi and Lahini, Yoav and Ismail, Nur and Wörhoff, Kerstin and Bromberg, Yaron and Silberberg, Yaron and Thompson, Mark G. and OBrien, Jeremy L. (2010) Quantum Walks of Correlated Photons. Science, 329 (5998). pp. 1500-1503. ISSN 0036-8075

Rangarajan, B. and Kovalgin, A.Y. and Wörhoff, K. and Schmitz, J. (2013) Low-temperature deposition of high-quality siliconoxynitride films for CMOS-integrated optics. Optics letters, 38 (6). pp. 941-943. ISSN 0146-9592

Ridder, René M. de and Wörhoff, Kerstin and Driessen, Alfred and Lambeck, Paul V. and Albers, Hans (1998) Silicon oxynitride planar waveguiding structures for application in optical communication. IEEE Journal of Selected Topics in Quantum Electronics, 4 (6). pp. 930-937. ISSN 1077-260X

Soest, Frank J. van and Wolferen, Henk A.G.M. van and Hoekstra, Hugo J.W.M. and Ridder, René M. de and Wörhoff, Kerstin and Lambeck, Paul V. (2005) Laser interference lithography with highly accurate interferometric alignment. Japanese Journal of Applied Physics, Part 1: Regular papers and short notes, 44 (9A). pp. 6568-6570. ISSN 0021-4922

Sun, F. and Sengo, G. and Driessen, A. and Wörhoff, K. (2009) Characterization of phosphorous and boron doped silicon oxynitride prepared plasma enhanced chemical vapor deposition. ECS Transactions, 25 (8). pp. 711-718. ISSN 1938-5862

Wörhoff, K. and Driessen, A. and Lambeck, P.V. and Hilderink, L.T.H. and Linders, P.W.C. and Popma, Th.J.A. (1999) Plasma enhanced chemical vapor deposition silicon oxynitride optimized for application in integrated optics. Sensors and Actuators A: Physical, 74 (1-3). pp. 9-12. ISSN 0924-4247

Wörhoff, K. and Hilderink, L.T.H. and Driessen, A. and Lambeck, P.V. (2002) Silicon Oxynitride: A Versatile Material for Integrated Optics Applications. Journal of the Electrochemical Society, 149 (8). F85-F91. ISSN 0013-4651

Wörhoff, K. and Hilderink, L.T.H. and Driessen, A. and Lambeck, P.V. (2002) Silicon Oxynitride: A Versatile Material for Integrated Optics Applications. Journal of the Electrochemical Society, 149 (8). F85-F91. ISSN 0013-4651

Wörhoff, K. and Noordman, O.F.J. and Lambeck, P.V. and Hulst, N.F. van and Albers, H. (1996) Noncritically phase-matched second harmonic generation of blue light in Si[O]N-calix[4] arene slab type waveguides. Optics Communications, 124 (5-6). pp. 493-499. ISSN 0030-4018

Wörhoff, K. and Offrein, B.J. and Lambeck, P.V. and Bona, G.L. and Driessen, A. (1999) Birefringence Compensation Applying Double-Core Waveguiding Structures. IEEE Photonics Technology Letters, 11 (2). pp. 206-208. ISSN 1041-1135

Wörhoff, Kerstin and Bradley, Jonathan D.B. and Ay, Feridun and Geskus, Dimitri and Blauwendraat, Tom P. and Pollnau, Markus (2009) Reliable low-cost fabrication of low-loss $Al_2O_3:Er^{3+}$ waveguides with 5.4-dB optical gain. IEEE Journal of Quantum Electronics, 45 (5). pp. 454-461. ISSN 0018-9197

Wörhoff, Kerstin and Lambeck, Paul V. and Driessen, Alfred (1999) Design, Tolerance Analysis, and Fabrication of Silicon Oxynitride Based Planar Optical Waveguide for Communication Devices. Journal of Lightwave Technology, 17 (8). pp. 1401-1407. ISSN 0733-8724

Wörhoff, Kerstin and Ridder, René M. de and Hoekstra, Hugo J.W.M. and Pollnau, Markus (2011) Integrated light sources and optical sensors. Fotonica Magazine, 36 (1). pp. 9-17. ISSN 0925-5338

Wörhoff, Kerstin and Roeloffzen, Chris G.H. and Ridder, René M. de and Driessen, Alfred and Lambeck, Paul V. (2007) Design and application of compact and highly tolerant polarization-independent waveguides. Journal of Lightwave Technology, 25 (5). pp. 1276-1283. ISSN 0733-8724

Yang, J. and Dalfsen, K. van and Wörhoff, K. and Ay, F. and Pollnau, M. (2010) High-gain Al2O3:Nd3+ channel waveguide amplifiers at 880 nm, 1060 nm and 1330 nm. Applied physics B: Lasers and optics, 101 (1-2). pp. 119-127. ISSN 0946-2171

Yang, Jing and Lamprecht, Tobias and Wörhoff, Kerstin and Driessen, Alfred and Horst, Folkert and Offrein, Bert J. and Ay, Feridun and Pollnau, Markus (2011) Integrated optical backplane amplifier. IEEE Journal of Selected Topics in Quantum Electronics . ISSN 1077-260X

Article News

Noordman, O.F.J. and Wörhoff, K. and Hulst, N.F. van (1995) Second harmonic generation in organic Cerenkov-type and modematching devices.

Wörhoff, K. and Noordman, O.F.J. and Hulst, N.F. van and Albers, H. and Lambeck, P.V. and Popma, Th.J.A. (1995) Second harmonic generation of blue light.

Book Section

Ay, Feridun and Uranga, Amaia and Bradley, Jonathan D.B. and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus (2008) Focused Ion Beam Nano-structuring of Bragg Gratings in Al2O3 Channel Waveguides. In: Proceedings of the First International Workshop on FIB for Photonics : Eindhoven, the Netherlands, 13-14 June 2008. University of Twente, Enschede, The Netherlands, pp. 48-51. ISBN 9789036526784

Dekker, R. and Sudarsan, V. and Veggel, F.C.J.M. van and Wörhoff, K. and Driessen, A. (2004) Erbium doped LaF3 nanoparticles incorporated in silicondioxide thin films for active integrated optical applications. In: IEEE/LEOS Benelux Chapter 2004 Annual Symposium : December 2 & 3, 2004, Ghent University. Ghent University, Ghent, Belgium, pp. 295-298. ISBN 9789076546063

Hussein, M.G. and Wörhoff, K. and Roeloffzen, C.G.H. and Hilderink, L.T.H. and Ridder, R.M. de and Driessen, A. (2001) Characterization of thermally treated PECVD SiON layers. In: IEEE/LEOS Benelux Chapter 2001 Annual Symposium. VUB Press, Brussel. ISBN 9789054872474

Ismail, N. and Sun, F. and Çivitci, F. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. and Driessen, A. (2010) Efficiency of integrated waveguide probes in the detection of fluorescence and backscattered light. In: Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications X. Proceedings of SPIE, 7559 . SPIE, the international Society for Optical Engineering, Bellingham, WA, USA, p. 755903. ISBN 9780819479556

Nieuwland, R.A. and Dekker, R. and Hilderink, L.T.H. and Diemeer, M.B.J. and Wörhoff, K. and Stouwdam, J.W. and Veggel, F.C.J.M. van and Driessen, A. (2004) A novel photodefinable polymer containing rare-earth doped nanoparticles for optical amplification. In: IEEE/LEOS Benelux Chapter 2004 Annual Symposium : December 2 & 3, 2004, Ghent University. Ghent University, Ghent, Belgium, pp. 323-326. ISBN 9789076546063

Pollnau, M. and Bradley, J.D.B. and Ay, F. and Bernhardi, E.H. and Ridder, R.M. de and Wörhoff, K. (2010) On-chip integrated lasers in Al2O3:Er on silicon. In: Optoelectronic Integrated Circuits XII. Proceedings of the SPIE, 7605 . SPIE, the international Society for Optical Engineering, Bellingham, WA, USA, 76050M. ISBN 9780819480019

Pollnau, M. and Ismail, N. and Akca, B.I. and Wörhoff, K. and Ridder, R.M. de (2012) Raman spectroscopy and optical coherence tomography on a micro-chip. In: Nano-Optics for Enhancing Light-Matter Interactions on a Molecular Scale: Plasmonics, Photonic Crystals, Metamaterials and Sub-Wavelength Resolution. NATO Science for Peace and Security Series - B: Physics and Biophysics . Springer Netherlands, Dordrecht, pp. 73-89. ISBN 9789400753129

Sun, Fei and Driessen, Alfred and Wörhoff, Kerstin (2010) High Performance Optical Waveguides based on Boron and Phosphorous doped Silicon Oxynitride. In: Integrated Optics: Devices, Materials, and Technologies XIV. Proceedings of the SPIE, 7604 . SPIE, the international Society for Optical Engineering, Bellingham, WA, USA, p. 760403. ISBN 9780819480002

Wörhoff, K. and Bradley, J.D.B. and Agazzi, L. and Pollnau, M. (2010) Rare-earth-ion-doped Al2O3 for integrated optical amplification. In: Integrated Optics: Devices, Materials, and Technologies XIV. Proceedings of the SPIE, 7604 . SPIE, the international Society for Optical Engineering, Bellingham, WA, USA, p. 760408. ISBN 9780819480002

Wörhoff, K. and Heideman, R.G. and Gilde, M.J. and Blidegn, K. and Heschel, M. and Vlekkert, H. van den (2004) Flip-chip assembly of an integrated optical sensor. In: IEEE/LEOS Benelux Chapter 2004 Annual Symposium : December 2 & 3, 2004, Ghent University. Ghent University, Ghent, Belgium. ISBN 9789076546063

Conference or Workshop Item

Agazzi, L. and Bernhardi, E.H. and Wörhoff, K. and Pollnau, M. (2012) Luminescence quenching in rare-earth-ion-doped $Al_2O_3$ lasers and its influence on relaxation oscillation frequency. In: Advanced Solid-State Photonics, Poster Session 2, ASSP 2012, 29 January - 3 February 2012, San Diego, California, USA (pp. AT4A.18).

Agazzi, L. and Bernhardi, E.H. and Wörhoff, K. and Pollnau, M. (2012) The impact of lifetime quenching on relaxation oscillations in solid-state lasers. In: Conference on Lasers and Electro-Optics: Science and Innovations, CLEO: S and I, 6-11 May 2012, San Jose, CA, USA (pp. Paper CTu1D.6).

Agazzi, L. and Bradley, J.D.B. and Ay, F. and Kahn, A. and Scheife, H. and Huber, G. and Ridder, R.M. de and Wörhoff, K. and Pollnau, M. (2009) Energy Migration Governs Upconversion Losses in Er3+-doped Integrated Amplifiers. In: Conference on Lasers and Electro-Optics Europe, 14-19 June 2009, Munich, Germany.

Agazzi, L. and Bradley, J.D.B. and Ay, F. and Kahn, A. and Scheife, H. and Petermann, K. and Huber, G. and Ridder, R.M. de and Wörhoff, K. and Pollnau, M. (2008) Upconversion spectroscopy of $Al_2O_3:Er^{3+}$. In: IEEE/LEOS Benelux Chapter, 13th Annual Symposium, 27-28 Nov. 2008, Enschede, The Netherlands (pp. pp. 51-53).

Agazzi, L. and Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2008) Spectroscopy and gain in $Al_2O_3:Er$ waveguides. In: International Conference on Luminescence and Optical Spectroscopy of Condensed Matter, 7-11 July 2008, Lyon, France (pp. Paper TuA2-O2).

Agazzi, L. and Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2010) Al2O3:Er3+ waveguide amplifiers at 1.5 μm. In: 15th European Conference on Integrated Optics, ECIO 2010, 7-9 April 2010, Cambridge, United Kingdom (pp. ThE2).

Agazzi, L. and Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2010) Understanding Al2O3:Er3+ device performance. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2010, 18-19 November 2010, Delft, The Netherlands (pp. pp. 261-264).

Agazzi, L. and Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2011) Presence of fast quenching mechanisms in Al2O3:Er3+. In: 16th International Conference on Luminescence & Optical Sperctroscopy of Condensed Matter, 26 June - 1 July 2011, Ann Arbor, MI, USA (pp. p. 10).

Agazzi, L. and Bradley, J.D.B. and Roelkens, G. and Baets, R. and Ay, F. and Wörhoff, K. and Pollnau, M. (2010) Wafer-scale monolithic integration of Al2O3:Er amplifiers with Si waveguides. In: Conference on Lasers and Electro-Optics, CLEO '10, 16-21 May 2010, San Jose, CA (pp. JWA92).

Agazzi, L. and Bradley, J.D.B. and Wörhoff, K. and Pollnau, M. (2011) Integrated Al2O3:Er3+ amplifiers: The impact of fast spectroscopic quenching processes. In: International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim, 28 August - 1 September 2011, Sydney, Australia (pp. Paper 5420).

Agazzi, L. and Bradley, J.D.B. and Yang, Jing and Ay, F. and Wörhoff, K. and Pollnau, M. (2011) Er3+ and Nd3+ doped Al2O3 amplifiers on a silicon chip. In: International Laser Physics Workshop, 11-15 July 2011, Sarajevo, Bosnia and Herzegovina (pp. Paper 4.2.5).

Agazzi, L. and Wörhoff, K. and Pollnau, M. (2011) Non-saturable absorption and its impact on amplifier performance in Al2O3:Er3+. In: Conference on Lasers and Electro-Optics, CLEO 2011, 1-6 May 2011, Baltimore, Maryland, USA (pp. JWA59).

Agazzi, L. and Wörhoff, K. and Pollnau, M. (2011) Excitation quenching in Er3-doped Al2O3 amplifiers. In: Conference on Lasers and Electro-Optics, CLEO/Europe, 22-26 May 2011, Munich, Germany (pp. Paper CE3.4).

Agazzi, L. and Wörhoff, K. and Pollnau, M. (2012) Fast quenching processes and their impact on 1.5-µm amplifier performance in $Al_2O_3:Er^{3+}$ waveguides. In: 16th European Conference on Integrated Optics, ECIO 2012, 18-20 April 2012, Sitges-Barcelona, Spain.

Agazzi, L. and Wörhoff, K. and Pollnau, M. (2012) Energy-transfer processes in $Al_2O_3:Er^{3+}$ waveguide amplifiers. In: Conference on Lasers and Electro-Optics: Science and Innovations, CLEO: S and I, 6-11 May 2012, San Jose, CA, USA (pp. Paper CF3A.3).

Agazzi, L. and Wörhoff, K. and Pollnau, M. and Kahn, A. and Fechner, M. and Petermann, K. and Huber, G. (2010) Upconversion spectroscopy of Al2O3:Er3+. In: IV International Workshop on Photonic and Electronic Materials, 5-7 July 2010, San Sebastian, Spain (pp. p. 49).

Agazzi, L. and Wörhoff, K. and Pollnau, M. (2012) Upconversion spectroscopy of erbium in amorphous aluminum oxide microstructures. In: MRS Fall Meeting, 25-30 November 2012, Boston, MA, USA (pp. 362-CC5.02).

Akca, I. and Ismail, N. and Sun, F. and Nguyen, V.D. and Kalkman, J. and Leeuwen, T.G. van and Driessen, A. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2010) Integrated arrayed waveguide grating spectrometer for on-chip optical coherence tomography. In: Conference on Lasers and Electro-Optics, CLEO 2010, 16-21 May 2010, San Jose, CA, USA (pp. JWA66).

Akca, B. Imran and Ismail, Nur and Sengo, Gabriel and Sun, Fei and Wörhoff, Kerstin and Pollnau, Markus and Ridder, René M. de (2010) High Resolution Silicon-Oxynitride Arrayed Waveguide Grating Spectrometers. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2010, 18-19 November 2010, Delft, The Netherlands (pp. pp. 125-128).

Akca, B.I. and Chang, L. and Sengo, G. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de and Nguyen, V. Duc and Kalkman, J. and Leeuwen, T.G. van (2012) Integrated AWG spectrometer for on-chip optical coherence tomography. In: 16th European Conference on Integrated Optics, ECIO 2012, 18-20 April 2012, Sitges-Barcelona, Spain.

Akca, B.I. and Doerr, C.R. and Sengo, G. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2013) Broad-spectral-range synchronized flat-top arrayed-waveguide grating applied in a 225-channel cascaded spectrometer. In: Conference on Lasers and Electro-Optics, CLEO/Europe 2013, 12-16 May 2013, Munich, Germany (pp. Paper CK-10.2).

Akca, B.I. and Ismail, N. and Chang, L. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2012) Towards Raman spectroscopy on a microchip. In: Scientific Exchange, SCIX 2012, 29 September - 4 October 2012, Kansas City, KS, USA.

Akca, B.I. and Ismail, N. and Sun, F. and Driessen, A. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2011) High-resolution integrated spectrometers in silicon-oxynitride. In: Conference on Lasers and Electro-Optics, CLEO 2011, 1-6 May 2011, Baltimore, Maryland, USA (pp. JWA65).

Akca, B.I. and Ismail, N. and Sun, F. and Driessen, A. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de and Nguyen, V.D. and Kalkman, J. and Leeuwen, T.G. van (2010) Integrated AWG spectrometer for on-chip optical coherence tomography and Raman spectroscopy. In: 15th European Conference on Integrated Optics, ECIO 2010, 7-9 April 2010, Cambridge, United Kingdom (pp. WeB1).

Akca, B.I. and Nguyen, V.D. and Kalkman, J. and Leeuwen, T.G. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Toward miniaturized optical coherence tomography. In: Conference on Lasers and Electro-Optics, CLEO 2011, 1-6 May 2011, Baltimore, Maryland, USA (pp. CWB3).

Akca, B.I. and Nguyen, V.D. and Kalkman, J. and Leeuwen, T.G. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Integrated spectrometers for spectral-domain optical coherence tomography. In: Conference on Lasers and Electro-Optics, CLEO/Europe, 22-26 May 2011, Munich, Germany (pp. Paper CL/EB5.4).

Akca, B.I. and Nguyen, V.D. and Kalkman, J. and Leeuwen, T.G. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Towards spectral-domain optical coherence tomography on a silicon chip. In: International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim, 28 August - 1 September 2011, Sydney, Australia (pp. Paper 4430).

Akca, B.I. and Nguyen, V.D. and Kalkman, J. and Leeuwen, T.G. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Toward Miniaturized Optical Coherence Tomography. In: The Sense of Contact 13, April 7, 2011, Zeist, the Netherlands.

Akca, B.I. and Povazay, B. and Alex, A. and Wörhoff, K. and Ridder, R.M. de and Drexler, W. and Pollnau, M. (2013) Toward spectral-domain optical coherence tomography on a silicon chip. In: SPIE/OSA European Conferences on Biomedical Optics, ECBO 2013, 12-16 May 2013, Munich, Germany (pp. 32-Paper EM3B.1).

Akca, B.I. and Povazay, B. and Alex, A. and Wörhoff, K. and Ridder, R.M. de and Drexler, W. and Pollnau, M. (2013) Miniature spectrometer and beam splitter for an integrated optical coherence tomography system. In: Conference on Lasers and Electro-Optics, CLEO/Europe 2013, 12-16 May 2013, Munich, Germany (pp. Paper Cl-6.1).

Akca, B.I. and Povazay, B. and Chang, L. and Alex, A. and Wörhoff, K. and Ridder, R.M. de and Drexler, W. and Pollnau, M. (2013) Advanced integrated spectrometer designs for miniaturized optical coherence tomography systems. In: Optical Coherence Tomography and Coherence Techniques VI, 12-16 May 2013, Munich, Germany.

Akca, B.I. and Sengo, G. and Pollnau, M. and Driessen, A. and Wörhoff, K. and Ridder, R.M. de (2012) Flat-focal-field integrated spectrometer using a field- flattening lens. In: 17th Annual Symposium of the IEEE Photonics Benelux Chapter, 29-30 November 2012, Mons, Belgium (pp. pp. 29-32).

Akca, B.I. and Sengo, G. and Pollnau, M. and Driessen, A. and Wörhoff, K. and Ridder, R.M. de (2013) Flat-focal-field integrated spectrometer using a field-flattening lens. In: Conference on Lasers and Electro-Optics, CLEO/Europe 2013, 12-16 May 2013, Munich, Germany (pp. Paper CK-10.3).

Akca, B.I. and Wörhoff, K. and Nguyen, V.D. and Kalkman, J. and Leeuwen, T.G. van and Ridder, R.M. de and Pollnau, M. (2011) Towards spectral-domain optical coherence tomography on a silicon chip. In: International Laser Physics Workshop, 11-15 July 2011, Sarajevo, Bosnia and Herzegovina (pp. Paper 3.1.3).

Akça, B.I. and Chang, Lantian and Sengo, G. and Worhoff, K. and Pollnau, M. and Ridder, R.M. de and Nguyen, V. Duc and Kalkman, J. and Leeuwen, T.G. van (2012) Integrated AWG spectrometer for on-chip optical coherence tomography. In: 16th European Conference on Integrated Optics, ECIO 2012, Sitges/Barcelona, Spain, 01-04-2012, Castelldefels/Barcelona (pp. Paper 46 - Paper 46).

Albers, H. and Hilderink, L.T.H. and Berends, J.H. and Wörhoff, K. and Hulst, N.F. van and Lambeck, P.V. (1996) A waveguide material for integrated optical sensors: silicon oxynitride. In: 1996 National Sensor Conference, March 20-21, 1996, Delft, The Netherlands (pp. pp. 221-230).

Aravazhi, S. and Geskus, D. and Wörhoff, K. and Pollnau, M. (2010) Gd3+, Lu3+ co-doped KY(WO4)2:Yb3+ planar waveguide lasers at 1025 and 980 nm. In: Symposium K: Rare earth doped materials for optical based technologies, 7-11 June 2010, Strasbourg (pp. pp. 52-53).

Aravazhi, S. and Geskus, D. and Gunther, D. and Wörhoff, K. and Pollnau, M. (2009) Growth, characterization, and waveguide lasing of Yb3+, Lu3+, Gd3+ co-doped KY(WO4)2 thin layers. In: International Commission for Optics (ICO) Topical Meeting on Emerging Trends and Novel Materials in Photonics, 7-9 Oct 2009, Delphi, Greece (pp. p. 142).

Aravazhi, S. and Geskus, D. and Günther, D. and Wörhoff, K. and Pollnau, M. (2009) Growth, characterization, and waveguide lasing of Yb3+, Lu3+, Gd3+ co-doped KY(WO4)2 thin layers. In: International Commission for Optics (ICO) Topical Meeting on Emerging Trends and Novel Materials in Photonics, 7-9 Oct 2009, Delphi, Greece.

Aravazhi, S. and Geskus, D. and Wörhoff, K. and Pollnau, M. (2008) Growth of $Yb^{3+}$, $Lu^{3+}$, $Gd^{3+}$ co-doped $KY(WO_4)_2$ thin layers. In: Proceedings of the 13th Annual Symposium of the IEEE LEOS Benelux Chapter, 27-28 November 2008, Enschede, The Netherlands (pp. pp. 219-220).

Aravazhi, S. and Geskus, D. and Wörhoff, K. and Pollnau, M. (2009) Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. In: 2009 Annual Symposium of the IEEE Photonics Benelux Chapter, 5-6 November 2009, Brussels, Belgium (pp. pp. 133-136).

Ay, Feridun and Yang, Jing and Lamprecht, Tobias and Wörhoff, Kerstin and Garcia Blanco, Sonia M. and Driessen, Alfred and Horst, Folkert and Offrein, Bert J. and Pollnau, Markus (2011) Nd-doped waveguide amplifiers for heterogeneous integration in optical backplanes. In: Optoelectronic Integrated Circuits XIII, 22-27 Jan 2011, San Francisco, California, USA (pp. Q1-Q8).

Ay, F. and Bernhardi, E.H. and Agazzi, L. and Bradley, J.D.B. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2010) Characterization of Bragg gratings in Al2O3 waveguides fabricated by focused ion beam milling and laser interference lithography. In: Conference on Lasers and Electro-Optics, CLEO '10, 16-21 May 2010, San Jose, CA (pp. CMQ4).

Ay, F. and Bradley, J.D.B. and Ridder, R.M. de and Wörhoff, K. and Pollnau, M. (2008) Bragg gratings in $Al_2O_3$ Channel waveguides by focused ion beam milling. In: 13th Annual Symposium of the IEEE LEOS Benelux Chapter, 27-28 November 2008, Enschede, The Netherlands (pp. pp. 215-217).

Ay, F. and Bradley, J.D.B. and Wörhoff, K. and Pollnau, M. (2007) Towards rare-earth-ion-doped $Al_2O_3$ active integrated optical devices. In: Abstract Collection Booklet of the 6th International Symposium on Modern Optics and Its Applications (ISMOA 2007), 6-10 August 2007, Bandung, Indonesia (pp. pp. 63-66).

Ay, F. and Bradley, J.D.B. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2009) Optical performance investigation of focused ion beam nanostructured integrated Fabry-Perot microcavities in Al$_2$O$_3$. In: European Conference on Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference, CLEO Europe - EQEC 2009, 14-19 June 2009, Munich, Germany (pp. CK.P.1 MON).

Ay, F. and Kauppinen, L.J. and Bradley, J.D.B. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2009) Focused ion beam milled on-chip resonator nanostructures for applications in rare-earth-ion-doped Al2O3 active waveguides. In: LEOS Annual Meeting Conference, LEOS '09, 4-8 Oct. 2009, Belek-Antalya, Turkey (pp. pp. 379-380).

Ay, F. and Wörhoff, K. and Bradley, J.D.B. and Pollnau, M. (2006) Reliable fabrication of low-loss $Al_{2}O_{3}$ waveguides for active integrated optics. In: 2nd EPS-QEOD Europhoton Conference on Solid-State and Fiber Coherent Light Sources - Europhysics Conference Abstracts, 10-15 September 2006, Pisa, Italy (pp. TuC2).

Ay, Feridun and Bradley, Jonathan D.B. and Hopman, Wico C.L. and Gadgil, Vishwas J. and Ridder, René M. de and Wörhoff, Kerstin and Pollnau, Markus (2007) Focused ion beam nano-structuring of $Al_2O_3$ dielectric layers for photonic applications. In: 33rd International Conference on Micro- and Nano-Engineering 2007, 23-26 September 2007, Copenhagen, Denmark (pp. pp. 627-628).

Ay, Feridun and Gadgil, Vishwas J. and Geskus, Dimitri and Aravazhi, Shanmugam and Wörhoff, Kerstin and Pollnau, Markus (2011) Application of focused ion beam technology for photonic nanostructures. In: 2011 NSTI Nanotechnology Conference & Expo - Nanotech 2011, 13-16 June 2011, Boston, Massachusetts (pp. pp. 200-203).

Ay, Feridun and Geskus, Dimitri and Inurrategui, Ion and Aravazhi, Shanmugam and Gadgil, Vishwas J. and Wörhoff, Kerstin and Pollnau, Markus (2010) Focused Ion Beam Nanostructured Gratings in Crystalline KYW:$Yb^{3+}$ Channel Waveguides. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2010, 18-19 November 2010, Delft, The Netherlands (pp. pp. 265-268).

Ay, Feridun and Uranga, Amaia and Bradley, Jonathan D.B. and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus (2008) Focused ion beam nano-structuring of Bragg gratings in $Al_2O_3$ channel waveguides. In: First International Workshop on FIB for Photonics, 13-14 June 2008, Eindhoven, the Netherlands (pp. pp. 48-50).

Ay, Feridun and Yang, Jing and Lamprecht, Tobias and Wörhoff, Kerstin and Offrein, Bert Jan and Pollnau, Markus (2010) Optical Waveguide Amplifiers for Heterogeneous Integration in Optical Backplanes. In: IEEE Photonics Society Annual Meeting, 7-11 Nov 2010, Denver, CO (pp. pp. 110-111).

Bernhardi, E.H. and Wörhoff, K. and Bradley, J.D.B. and Ridder, R.M. de and Pollnau, M. (2010) Integrated Al2O3:Er3+ microring and distributed feedback lasers on silicon. In: Symposium K: Rare earth doped materials for optical based technologies, 7-11 June 2010, Strasbourg (pp. pp. 5-6).

Bernhardi, E.H. and Agazzi, L. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2010) Narrow-Linewidth Distributed Feedback Channel Waveguide Laser in Al$_2$O$_3$:Er$^{3+}$. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2010, 18-19 November 2010, Delft, The Netherlands (pp. pp. 85-88).

Bernhardi, E.H. and Khan, M.R.H. and Roeloffzen, C.G.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2012) Optical Generation of Microwave Signals with a Dual-Phase-Shifted Al2O3:Yb3+ Distributed-Feedback Laser. In: Conference on Lasers and Electro-Optics: Science and Innovations, CLEO: S and I, 6-11 May 2012, San Jose, CA, USA (pp. JW2A.36).

Bernhardi, E.H. and Khan, M.R.H. and Roeloffzen, C.G.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2012) Photonic Generation of Microwave Signals Using Dual-Wavelength Distributed-Feedback Waveguide Lasers. In: 17th Annual Symposium of the IEEE Photonics Benelux Chapter, 29-30 November 2012, Mons, Belgium (pp. pp. 101-104).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Agazzi, L. and Khan, M.R.H. and Roeloffzen, C.G.H. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2010) Low-threshold, single-frequency distributed-feedback waveguide laser in Al2O3:Er3+ on silicon. In: Conference on Lasers and Electro-Optics, CLEO '10, 16-21 May 2010, San Jose, CA (pp. CTuU4).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Agazzi, L. and Khan, M.R.H. and Roeloffzen, C.G.H. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2010) Single-Frequency, Narrow-Linewidth Distributed Feedback Waveguide Laser in Al2O3:Er3+ on Silicon. In: 15th European Conference on Integrated Optics, ECIO 2010, 7-9 April 2010, Cambridge, United Kingdom (pp. ThE1).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Dijkstra, M. and Agazzi, L. and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2009) Designing an Integrated Al2O3:Er3+ Distributed Feedback Laser. In: 2009 Annual Symposium of the IEEE Photonics Benelux Chapter, 5-6 November 2009, Brussels, Belgium (pp. pp. 197-200).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Pollnau, M. and Ridder, R.M. de (2010) 1.7-kHz-linewidth distributed feedback laser in Al2O3:Er3+. In: Europhoton Conference, 30 Aug - 3 Sep 2010, Hamburg, Germany.

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) High-Q Monolithic Distributed Bragg Reflector Cavities in Al2O3 Channel Waveguides. In: Conference on Lasers and Electro-Optics, CLEO 2011, 1-6 May 2011, Baltimore, Maryland, USA (pp. CME4).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Distributed feedback channel waveguide lasers in erbium- and ytterbium-doped Al2O3:Er3 on silicon. In: Conference on Lasers and Electro-Optics, CLEO/Europe, 22-26 May 2011, Munich, Germany (pp. Paper CJ10.4).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Distributed Bragg reflector high-Q cavities and lasers in Al2O3 on silicon. In: Conference on Lasers and Electro-Optics, CLEO/Europe, 22-26 May 2011, Munich, Germany (pp. Paper CE5.2).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Ultra-narrow-linewidth distributed feedback lasers in Al2O3:Er3+ and Al2O3:Yb3+. In: International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim, 28 August - 1 September 2011, Sydney, Australia (pp. Paper 5420).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Monolithic Distributed Bragg Reflector Cavities in Al2O3 with Quality Factors Exceeding One Million. In: International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim, 28 August - 1 September 2011, Sydney, Australia (pp. Paper 4240-CT).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Efficient and ultra-narrow-linewidth integrated waveguide lasers in Al2O3:Yb and Al2O3:Er. In: International Laser Physics Workshop, LPHYS 2011, 11-15 July 2011, Sarajevo, Bosnia and Herzegovina (pp. Paper 4.5.3).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) High-Q distributed-Bragg-grating laser cavities. In: 16th International Conference on Luminescence & Optical Sperctroscopy of Condensed Matter, 26 June - 1 July 2011, Ann Arbor, MI, USA (pp. p. 12).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) High-Quality Monolithic Distributed Bragg Reflector Cavities and Lasers in Alumina Channel Waveguides. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2011, 1-2 December 2011, Ghent, Belgium (pp. pp. 41-44).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2012) Stable microwave generation in a dual-phase-shifted $Al_2O_3:Yb^{3+}$ distributed-feedback waveguide laser. In: Advanced Solid-State Photonics, ASSP 2012 - Semiconductor and Waveguide Lasers, 29 January - 3 February 2012, San Diego, CA, USA (pp. AM5A.6).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2012) Waveguide Bragg gratings for the realization of high-quality monolithic cavities. In: Conference on Bragg Gratings, Photosensitivity and Poling in Glass Waveguides, BGPP, June 17-21, 2012, Colorado Springs, CO, USA (pp. BM3D.1).

Bernhardi, E.H. and Wolferen, H.A.G.M. van and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. and Khan, M.R.H. and Roeloffzen, C.G.H. (2012) Dual-wavelength $Al_2O_3:Yb^{3+}$ distributed feedback waveguide laser for microwave signal generation. In: 16th European Conference on Integrated Optics, ECIO 2012, 18-20 April 2012, Sitges-Barcelona, Spain.

Bernhardi, E.H. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2011) Highly efficient distributed feedback waveguide laser in Al2O3:Yb3+ on silicon. In: Advanced Solid-State Photonics, ASSP 2011, 13-16 Feb 2011, Istanbul, Turkey (pp. ATuD7(1)-ATuD7(3)).

Bernhardi, E.H. and Werf, K.O. van der and Hollink, A.J.F. and Worhoff, K. and Ridder, R.M. de and Subramaniam, V. and Pollnau, M. (2012) Evanescent-field intra-cavity sensing with a dual-wavelength distributed-feedback laser. In: Conference on Lasers and Electro-Optics, San Jose, California, USA, 01-05-2012, Washington, DC (pp. Paper CM3B.5 - Paper CM3B.5).

Bernhardi, E.H. and Ridder, R.M. de and Wörhoff, K. and Pollnau, M. (2013) Rare-earth-ion-doped ultra-narrow-linewidth lasers on a silicon chip and applications to intra-laser-cavity optical sensing. In: Solid State Lasers XXII of SPIE Photonics West, 2-7 February 2013, San Francisco, CA, USA (pp. p. 859909).

Bernhardi, E.H. and Werf, K.O. van der and Hollink, A.J.F. and Wörhoff, K. and Ridder, R.M. de and Subramaniam, V. and Pollnau, M. (2013) On-chip microparticle detection and sizing using a dual-wavelength waveguide laser. In: Conference on Lasers and Electro-Optics, CLEO/Europe 2013, 12-16 May 2013, Munich, Germany (pp. Paper CL-P.9).

Bernhardi, Edward H. and Werf, Kees O. van der and Hollink, Anton J.F. and Wörhoff, Kerstin and Subramaniam, Vinod and Pollnau, Markus (2014) Intra-laser-cavity sensing with a dual-wavelength distributed-feedback laser. In: 17th European Conference on Integrated Optics, ECIO 2014, 24-27 June 2014, Nice, France.

Bernhardi, Edward H. and Wolferen, Henk A. van and Wörhoff, Kerstin and Pollnau, Markus and Ridder, René M. de (2010) High-Quality, Distributed Phase-Shift, Distributed Feedback Cavities in Al2O3 Waveguides. In: Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, 21-24 June 2010, Karlsruhe, Germany (pp. BMB5).

Bradley, J.D.B. and Costa e Silva, M. and Gay, M. and Bramerie, L. and Driessen, A. and Wörhoff, K. and Simon, J.C. and Pollnau, M. (2010) 170 Gbit/s transmission in Al2O3:Er integrated amplifiers. In: Conference on Lasers and Electro-Optics, CLEO 2010, 16-21 May 2010, San Jose, CA, USA (pp. ATuB5).

Bradley, J.D.B. and Agazzi, L. and Ay, F. and Wörhoff, K. and Pollnau, M. and Stoffer, R. (2010) Widely wavelength-selective Al2O3:Er3+ ring laser. In: 15th European Conference on Integrated Optics, ECIO 2010, 7-9 April 2010, Cambridge, United Kingdom (pp. ThE3).

Bradley, J.D.B. and Agazzi, L. and Geskus, D. and Ay, F. and Wörhoff, K. and Pollnau, M. (2008) Reactively co-sputtered $Al_2O_3:Er^{3+}$ for active photonic devices. In: 2008 Annual Workshop of the IEEE LEOS Benelux Chapter "Materials, Devices and Systems in Optics and Photonics, 30-5-2008, Brussels, Belgium (pp. pp. 9-10).

Bradley, J.D.B. and Agazzi, L. and Geskus, D. and Ay, F. and Wörhoff, K. and Pollnau, M. (2009) 2.0 dB/cm gain in an Al$_2$O$_3$:Er$^{3+}$ waveguide on silicon. In: Conference on Lasers and Electro-Optics, 2-4 June 2009, Baltimore, Maryland, USA (pp. CThCC2).

Bradley, J.D.B. and Agazzi, L. and Geskus, D. and Ay, F. and Wörhoff, K. and Pollnau, M. (2009) Higher gain in 977-nm-pumped Al$_2$O$_3$:Er$^{3+}$ integrated optical amplifiers. In: European Conference on Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference, CLEO Europe - EQEC 2009, 14-19 June 2009, Munich, Germany (pp. CE1.4 MON).

Bradley, J.D.B. and Agazzi, L. and Geskus, D. and Ay, F. and Wörhoff, K. and Pollnau, M. and Arnoldbik, W.M. (2008) Enhanced gain in Er-doped $Al_2O_3$ channel waveguide amplifiers. In: 13th Annual Symposium of the IEEE LEOS Benelux Chapter, 27-28 November 2008, Enschede, The Netherlands (pp. pp. 131-134).

Bradley, J.D.B. and Agazzi, L. and Geskus, D. and Blauwendraat, T. and Ay, F. and Wörhoff, K. and Pollnau, M. (2008) Investigation of optical gain in $Al_2O_3:Er$ channel waveguide amplifiers. In: Technical Digest Conference on Lasers and Electro-Optics, CLEO 2008, 4-9 May 2008, San Jose, California, U.S.A. (pp. Paper JTuA30).

Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2007) Low-loss rib waveguides in $Al_{2}O_{3}$ layers for active integrated optical devices. In: Digest of the Conference on Lasers and Electro-Optics Europe (CLEO/Europe-IQEC 2007), 17-22 June 2007, Munich, Germany (pp. CE7-6).

Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2007) Reactive ion etching of low-loss channel waveguides in $Al_2O_3$ and $Y_2O_3$ layers. In: Book of Abstracts 33rd International Conference on Micro- and Nano-Engineering 2007, 23-26 September 2007, Copenhagen, Denmark (pp. pp. 375-376).

Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2006) Reactive Ion Etching of $Y_{2}O_{3}$ films applying F-, Cl- and Cl/Br-based Inductively Coupled Plasmas. In: Science and Technology of Dielectrics for Active and Passive Photonic Devices, 29 Oct - 3 Nov 2006, Cancun, Mexico (pp. pp. 117-124).

Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. (2006) $AL_{2}O_{3}$ and $Y_{2}O_{3}$ Thin Films for Active Integrated Optical Waveguide Devices. In: IEEE/LEOS Benelux Chapter 2006 Annual Symposium, November 30 - December 1, 2006, Eindhoven, The Netherlands (pp. pp. 113-116).

Bradley, J.D.B. and Gay, M. and Simon, J.C. and Wörhoff, K. and Pollnau, M. (2009) 40 Gbit/s transmission in a silicon-compatible Al2O3:Er3+ integrated optical amplifier. In: European Conference on Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference, CLEO Europe - EQEC 2009, 14-19 June 2009, Munich, Germany (pp. CI4.3 TUE).

Bradley, J.D.B. and Geskus, D. and Blaauwendraat, T. and Ay, F. and Wörhoff, K. and Pollnau, M. (2007) Optimized deposition and structuring of reactively co-sputtered $AL_2O_3:Er$ waveguide layers with net optical gain. In: 12th Annual Symposium IEEE/LEOS Benelux, 17-18 December 2007, Brussels, Belgium (pp. pp. 107-110).

Bradley, J.D.B. and Geskus, D. and Blauwendraat, T. and Ay, F. and Wörhoff, K. and Pollnau, M. and Kahn, A. and Scheife, H. and Petermann, K. and Huber, G. (2008) Growth, micro-structuring, spectroscopy, and optical gain in as-deposited $Al_2O_3:Er$ waveguides. In: Conference Program and Technical Digest, Advanced Solid-State Photonics: Topical Meeting and Tabletop Exhibit, 27-30 January 2008, Nara, Japan (pp. Paper WB10).

Bradley, J.D.B. and Stoffer, R. and Agazzi, L. and Ay, F. and Wörhoff, K. and Pollnau, M. (2009) Al2O3:Er3+ as a broad gain medium for 1.53-um integrated optical applications. In: 2009 Annual Symposium of the IEEE Photonics Benelux Chapter, 5-6 November 2009, Brussels, Belgium (pp. pp. 13-16).

Bradley, J.D.B. and Stoffer, R. and Agazzi, L. and Ay, F. and Wörhoff, K. and Pollnau, M. (2010) Widely wavelength-selective integrated ring laser in Al2O3:Er. In: Conference on Lasers and Electro-Optics, CLEO '10, 16-21 May 2010, San Jose, CA (pp. CMQ2).

Bradley, Jonathan D.B. and Agazzi, Laura and Ay, Feridun and Wörhoff, Kerstin and Pollnau, Markus (2009) High-performance Al$_2$O$_3$:Er$^{3+}$ integrated optical amplifiers. In: 18th International Laser Physics Workshop, 13-17 July 2009, Barcelona, Spain (pp. 8.3.5).

Bradley, Jonathan D.B. and Ay, Feridun and Blauwendraat, Tom and Wörhoff, Kerstin and Pollnau, Markus (2007) Rare-earth-ion-doped $AL_2O_3$ waveguides for active integrated optical devices. In: International Conference on Lasers, Applications, and Technologies 2007: Advanced Lasers and Systems, 28 May - 1 June 2007, Minsk, Belarus.

Chang, L. and Akca, B.I. and Sengo, G. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2012) Polarization-independent optical low-coherence reflectometry with a non-birefringent arrayed-waveguide grating. In: 16th European Conference on Integrated Optics, ECIO 2012, 18-20 April 2012, Sitges-Barcelona, Spain.

Chang, L. and Akca, B.I. and Sengo, G. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2012) High-performance spectral-domain optical low-coherence reflectometry with an integrated arrayed-waveguide grating. In: Conference on Lasers and Electro-Optics: Science and Innovations, CLEO: S and I, 6-11 May 2012, San Jose, CA, USA (pp. JTh2A.34).

Chang, L. and Ismail, N. and Ridder, R.M. de and Pollnau, M. and Wörhoff, K. (2012) On-chip reflowed polymer microlenses for collimating light from single-mode optical waveguides. In: 17th Annual Symposium of the IEEE Photonics Benelux Chapter, 29-30 November 2012, Mons, Belgium (pp. pp. 243-246).

Chang, L. and Ismail, N. and Ridder, R.M. de and Pollnau, M. and Wörhoff, K. (2013) Integrated polymer microlenses for two-dimensional collimation of light from single-mode optical waveguides. In: Conference on Lasers and Electro-Optics, CLEO/Europe 2013, 12-16 May 2013, Munich, Germany (pp. Paper CK-10.6).

Chang, Lantian and Akça, B.I. and Ridder, R.M. de and Wörhoff, K. and Pollnau, M. (2011) Performance Improvement and Birefringence Investigation of Spectral Domain Optical Coherence Tomography Using a Modified Arrayed Waveguide Grating. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2011, 1-2 December 2011, Ghent, Belgium (pp. pp. 241-244).

Dalfsen, K. van and Aravazhi, S. and Geskus, D. and Garcia Blanco, S.M. and Wörhoff, K. and Pollnau, M. (2011) Efficient channel waveguide lasers based on thulium-doped double tungstates. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2011, 1-2 December 2011, Ghent, Belgium (pp. pp. 25-28).

Dalfsen, K. van and Aravazhi, S. and Geskus, D. and Wörhoff, K. and Pollnau, M. (2010) Lattice matching and microstructuring of Gd3+, Lu3+ co-doped KY(WO4)2:Tm3+ channel waveguide lasers. In: European Workshop on Double Tungstate Lasers, 3 September 2010, Hamburg, Germany (pp. p. 9).

Dalfsen, K. van and Aravazhi, S. and Geskus, D. and Wörhoff, K. and Pollnau, M. (2011) Efficient Gd$^{3+}$, Lu$^{3+}$ co-doped KY(WO$_{4}$)$_{2}$:Tm$^{3+}$ channel waveguide lasers. In: Conference on Lasers and Electro-Optics, CLEO/Europe, 22-26 May 2011, Munich, Germany (pp. Paper CA1.5).

Dalfsen, K. van and Aravazhi, S. and Geskus, D. and Wörhoff, K. and Pollnau, M. (2011) Efficient Tm$^{3+}$ lasers in double tungstate channel waveguides. In: 16th International Conference on Luminescence & Optical Sperctroscopy of Condensed Matter, 26 June - 1 July 2011, Ann Arbor, MI, USA (pp. p. 65).

Dalfsen, K. van and Geskus, D. and Ay, F. and Wörhoff, K. and Aravazhi, S. and Pollnau, M. (2011) High-power Yb- and Tm-doped double tungstate channel waveguide lasers. In: International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim, 28 August - 1 September 2011, Sydney, Australia (pp. Paper 5420).

Dalfsen, K. van and Geskus, D. and Ay, F. and Wörhoff, K. and Aravazhi, S. and Pollnau, M. (2011) High-power Yb- and Tm-doped double tungstate channel waveguide lasers. In: International Laser Physics Workshop, 11-15 July 2011, Sarajevo, Bosnia and Herzegovina (pp. Paper 4.4.4).

Dalfsen, K. van and Yang, J. and Ay, F. and Wörhoff, K. and Pollnau, M. (2009) Neodymium-doped Al2O3 Channel Waveguide Amplifiers. In: 2009 Annual Symposium of the IEEE Photonics Benelux Chapter, 5-6 November 2009, Brussels, Belgium (pp. pp. 149-152).

Dalfsen, K. van and Yang, J. and Ay, F. and Wörhoff, K. and Pollnau, M. (2010) Nd-doped aluminum oxide integrated amplifiers at 880 nm, 1060 nm, and 1330 nm. In: 15th European Conference on Integrated Optics, ECIO 2010, 7-9 April 2010, Cambridge, United Kingdom (pp. ThP34).

Dekker, R. and Diemeer, M.B.J. and Klein, E.J. and Hilderink, L.T.H. and Wörhoff, K. and Driessen, A. (2005) Photo-Patternable Polymer Waveguides for microring Resonators. In: 31st European Conference on Optical Communications (ECOC), 25-29 September 2005, Glasgow, Scotland (pp. pp. 187-188).

Dekker, R. and Hilderink, L.T.H. and Diemeer, M.B.J. and Stouwdam, J.W. and Sudarsan, V. and Veggel, F.C.J.M. van and Wörhoff, K. and Driessen, A. (2006) Rare earth doped nanoparticles in organic and inorganic host materials for application in integrated optics. In: 2nd International Symposium on Science and Technology of Dielectrics in Emerging Technologies - and- Persistent Phosphors, 15-20 May 2005, Quebec City, Canada, USA (pp. pp. 174-183).

Dekker, R. and Stouwdam, J.W. and Klunder, D.J.W. and Borreman, A. and Diemeer, M.B.J. and Wörhoff, K. and Driessen, A. (2003) Optical gain of LaF3:Nd nanoparticle doped polymers for active integrated optical devices. In: IEEE/LEOS Benelux Chapter 2003 Annual Symposium, November 20-21, 2003, Enschede, The Netherlands (pp. pp. 185-188).

Dekker, R. and Wörhoff, K. and Stouwdam, J.W. and Veggel, F.C.J.M. van and Driessen, A. (2005) Absorption spectroscopy of complex rare earth ion doped hybrid materials over a broad wavelength range. In: Conference on Lasers and Electro-Optics, CLEO/Europe 2005, May 22-27, 2005, Baltimore, MD (pp. p. 287).

Dekker, R. and Wörhoff, K. and Stouwdam, J.W. and Veggel, F.C.J.M. van and Driessen, A. (2005) Absorption spectroscopy of complex rare earth ion doped hybrid materials over a broad wavelength range. In: 7th International Conference on Photonics in Europe, 12-17 June 2005, Munich, Germany (pp. p. 287).

Driessen, A. and Wörhoff, K. and Dekker, R. and Geuzebroek, D.H. and Klein, E.J. (2008) Propagation of short lightpulses in microring resonators. In: Proceedings 10th Anniversary International Conference on Transparant Optical Networks (ICTON), 22-26 June 2008, Athens, Greece (pp. p. 1).

Geskus, D. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2010) High-power KY(WO4)2:Yb3+ channel waveguide lasers. In: European Workshop on Double Tungstate Lasers, 3 September 2010, Hamburg, Germany (pp. p. 10).

Geskus, D. and Aravazhi, S. and Bernhardi, E. and Grivas, C. and Wörhoff, K. and Pollnau, M. (2010) Low-Threshold and Highly Efficient Gd3+, Lu3+Co-doped KY(WO4)2:Yb3+ Planar Waveguide Lasers. In: Advanced Solid-State Photonics, ASSP, 31 Jan - 3 Feb 2010, San Diego, California, USA (pp. ATuB2).

Geskus, D. and Aravazhi, S. and Grivas, C. and Wörhoff, K. and Pollnau, M. (2010) Highly efficient KY(WO$_{4}$)$_{2}$:Gd$^{3+}$, Lu$^{3+}$, Yb$^{3+}$ channel waveguide laser. In: Europhoton Conference, 30 Aug - 3 Sep 2010, Hamburg, Germany.

Geskus, D. and Aravazhi, S. and Grivas, C. and Wörhoff, K. and Pollnau, M. (2010) Microstructured Channel Waveguide Lasers In KY(WO4)2:Gd3+, Lu3+, Yb3+. In: Frontiers in Optics, FIO 2010 - Novel Hybrid Integration II, 24-28 October 2010, Rochester, NY.

Geskus, D. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2009) Low-threshold laser in a high-index-contrast double tungstate waveguide. In: European Conference on Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference, CLEO Europe - EQEC 2009, 14-19 June 2009, Munich, Germany.

Geskus, D. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2010) High-gain KY(WO4)2:Yb3+ planar waveguide laser at the zero-phonon line. In: Conference on Lasers and Electro-Optics, CLEO '10, 16-21 May 2010, San Jose, CA (pp. CTuU3).

Geskus, D. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2010) Highly efficient Gd, Lu co-doped KYW:Yb$^{3+}$ planar and channel waveguide lasers. In: IV International Workshop on Photonic and Electronic Materials, 5-7 July 2010, San Sebastian, Spain (pp. p. 50).

Geskus, D. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2011) High-power, broadly tunable, and low-quantum-defect Yb3+-doped double tungstate channel waveguide lasers. In: Advanced Solid-State Photonics, ASSP 2011, 13-16 Feb 2011, Istanbul, Turkey (pp. ATuD6(1)-ATuD7(3)).

Geskus, D. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2011) Broadly tunable and low-quantum-defect Yb3+-doped double tungstate channel waveguide lasers. In: Conference on Lasers and Electro-Optics, CLEO/Europe, 22-26 May 2011, Munich, Germany (pp. Paper CA7.4).

Geskus, D. and Bradley, J.D.B. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2008) Poor man's channel waveguide laser: $KY(WO_4)_2:Yb$. In: Conference on Lasers and Electro-Optics (CLEO) 2008, OSA Technical Digest (CD), 4-9 May 2008, San Jose, California, U.S.A. (pp. Paper CTuS4).

Geskus, D. and Bradley, J.D.B. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2007) Progress on micro-structured $KY{(WO_4)}_2$ waveguides for optically active devices. In: 12th Annual Symposium IEEE/LEOS Benelux, 17-18 December 2007, Brussels, Belgium (pp. pp. 103-106).

Geskus, D. and Bradley, J.D.B. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2008) Fibre-top-loaded channel waveguide laser in $KY(WO_4)_2:Yb^{3+}$. In: 2008 Annual Workshop of the IEEE LEOS Benelux Chapter "Materials, Devices and Systems in Optics and Photonics, 30-05-2008, Brussels, Belgium (pp. pp. 13-14).

Geskus, D. and Dalfsen, K. van and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2011) Yb3+ and Tm3+ doped KGdxLuyY1-x-y(WO4)2 Channel Waveguide Lasers. In: Conference on Lasers and Electro-Optics, CLEO 2011, 1-6 May 2011, Baltimore, Maryland, USA (pp. CWP4).

Geskus, Dimitri and Aravazhi, Shanmugam and Bernhardi, Edward and Grivas, Christos and Wörhoff, Kerstin and Pollnau, Markus (2009) Highly efficient Gd, Lu co-doped KY(WO4)2:Yb3+ planar waveguide laser. In: Proceedings of the European Optical Society, 1st EOS Topical Meeting on Lasers 2009, 27-30 Sep 2009, Capri, Italy (pp. p. 2172).

Hussein, M.G. and Wörhoff, K. and Sengo, G. and Driessen, A. (2004) Fabrication and characterization of PECVD phosphorus-doped silicon oxynitride layers for integrated optics applications. In: IEEE/LEOS Benelux Chapter 2004 Annual Symposium, December 2-3, 2004, Ghent, Belgium (pp. pp. 91-94).

Hussein, M.G. and Wörhoff, K. and Sengo, G. and Driessen, A. (2005) Influence of phosphorus doping on hydrogen content and optical losses in PECVD silicon oxynitride. In: IEEE/LEOS Benelux Chapter 2005 Annual Symposium, December 1-2, 2005, Mons, Belgium (pp. pp. 101-104).

Hussein, M.G. and Wörhoff, K. and Sengo, G. and Driessen, A. (2005) Deposition and characterization of PECVD phosphorus doped silicon oxynitride layers for integrated optics applications. In: 15th European Conference on Chemical Vapor Deposition, EUROCVD-15, 5-9 September 2005, Bochum, Germany (pp. pp. 457-464).

Inurrategi, I. and Ay, F. and Geskus, D. and Aravazhi, S. and Gadgil, V.J. and Wörhoff, K. and Pollnau, M. (2010) Bragg Gratings in Crystalline Waveguides Fabricated by Focused Ion Beam Milling. In: 2nd International Workshop on FIB for Photonics, 6-7 Apr 2010, Cambridge, UK (pp. pp. 8-9).

Ismail, N. and Akca, B.I. and Sun, F. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. and Driessen, A. (2010) Arrayed-waveguide-grating light collector for on-chip spectroscopy. In: 15th European Conference on Integrated Optics, ECIO 2010, 7-9 April 2010, Cambridge, United Kingdom (pp. WeB5).

Ismail, N. and Akca, I. and Baclig, A.C. and Caspers, P.J. and Sun, F. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. and Driessen, A. (2010) Design of low-loss arrayed waveguide gratings for applications in integrated Raman spectroscopy. In: Conference on Lasers and Electro-Optics, CLEO '10, 16-21 May 2010, San Jose, CA (pp. CFA7).

Ismail, N. and Baclig, A.C. and Caspers, P.J. and Puppels, G.J. and Akca, B.I. and Sun, F. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. and Driessen, A. (2010) Integrated optical confocal system for Raman spectroscopy. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2010, 18-19 November 2010, Delft, The Netherlands (pp. pp. 57-60).

Ismail, N. and Chang, L. and Sengo, G. and Ridder, R.M. de and Pollnau, M. and Wörhoff, K. (2012) Polymer microlenses for collimating light from single-mode silicon oxynitride optical waveguides. In: 16th European Conference on Integrated Optics, ECIO 2012, 18-20 April 2012, Sitges-Barcelona, Spain.

Ismail, N. and Choo-Smith, L.-P. and Wörhoff, K. and Driessen, A. and Baclig, A.C. and Caspers, P.J. and Puppels, G.J. and Ridder, R.M. de and Pollnau, M. (2011) Raman spectroscopy of human teeth using integrated optical spectrometers. In: Annual Symposium of the IEEE Photonics Benelux Chapter 2011, 1-2 December 2011, Ghent, Belgium (pp. pp. 65-68).

Ismail, N. and Sun, F. and Sengo, G. and Wörhoff, K. and Driessen, A. and Ridder, R.M. de and Pollnau, M. (2011) Broadband polarization-insensitive arrayed waveguide gratings for Raman spectroscopy. In: Conference on Lasers and Electro-Optics, 1-6 May 2011, Baltimore, Maryland, USA (pp. CFN4).

Ismail, N. and Sun, F. and Wörhoff, K. and Pollnau, M. and Driessen, A. (2008) Detection of light backscattered from liquids by means of integrated optical waveguides. In: 13th Annual Symposium of the IEEE LEOS Benelux Chapter, 27-28 November 2008, Enschede, The Netherlands (pp. pp. 27-29).

Ismail, N. and Sun, F. and Çivitci, F. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. and Driessen, A. (2009) Efficiency comparison between integrated optical waveguide probes and conventional fiber probes in the detection of backscattered light. In: 2009 Annual Symposium of the IEEE Photonics Benelux Chapter, 5-6 November 2009, Brussels, Belgium (pp. pp. 105-108).

Ismail, N. and Sun, F. and Çivitci, F. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. and Driessen, A. (2009) Use of integrated optical waveguide probes as an alternative to fiber probes for sensing of light backscattered from small volumes. In: 3rd EOS Topical Meeting on Optical Microsystems, 2009, September 27-30, 2009, Capri, Italy (pp. p. 2158).

Ismail, N. and Wörhoff, K. and Choo-Smith, L.P. and Baclig, A.C. and Caspers, P.J. and Puppels, G.J. and Driessen, A. and Ridder, R.M. de and Pollnau, M. (2011) On-chip Raman spectrometer for the detection of early dental caries. In: International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim, 28 August - 1 September 2011, Sydney, Australia (pp. Paper 2700-PO).

Ismail, N. and Wörhoff, K. and Driessen, A. and Ridder, R.M. de and Pollnau, M. and Choo-Smith, L.-P. and Baclig, A.C. and Caspers, P.J. and Puppels, G.J. (2012) Arrayed waveguide grating for polarized Raman spectroscopy of human teeth. In: 16th European Conference on Integrated Optics, ECIO 2012, 18-20 April 2012, Sitges-Barcelona, Spain.

Ismail, Nur and Sun, Fei and Wörhoff, Kerstin and Driessen, Alfred and Ridder, René M. de and Pollnau, Markus (2011) Integrated optical backscattered-light collectors for on-chip spectroscopy. In: The Sense of Contact 13, April 7, 2011, Zeist, the Netherlands.

Ismail, Nur and Sun, Fei and Wörhoff, Kerstin and Driessen, Alfred and Ridder, René M. de and Pollnau, Markus (2011) Integrated arrayed waveguide grating spectrometer for measuring Raman spectra. In: Conference on Lasers and Electro-Optics, CLEO/Europe, 22-26 May 2011, Munich, Germany (pp. Paper CH5.4).

Ismail, Nur and Çivitci, Fehmi and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus and Driessen, Alfred (2011) Integrated waveguide probes for efficient backscattered-light collection from thin samples. In: Conference on Lasers and Electro-Optics, CLEO/Europe, 22-26 May 2011, Munich, Germany (pp. Paper CL/EB.P.13).

Kahn, A. and Gün, T. and Ileri, B. and Kühn, H. and Petermann, K. and Huber, G. and Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. and Luo, Y. and Hoffmann, P. (2008) Mono-crystalline rare earth doped $(Gd, Lu)_2O_3$ waveguiding films produced by pulsed laser deposition and structured by reactive ion etching. In: Proceedings Conference on Lasers and Electro-Optics, CLEO 2008, 4-9 May 2008, San Jose, California, U.S.A. (pp. Paper CTuS1).

Kahn, A. and Kühn, H. and Heinrich, S. and Gün, T. and Tellkamp, F. and Petermann, K. and Bradley, J.D.B. and Ay, F. and Wörhoff, K. and Pollnau, M. and Kuzminykh, Y. and Luo, Y. and Hoffmann, P. and Huber, G. (2008) In-band pumping of expitaxially grown $Er:(Gd, Lu)_2O_3$ waveguides for active integrated optical devices. In: 3rd EPS-QEOD: Europhoton Conference on Solid-State and Fiber coherent Light sources, 31-8-2008 - 5-9-2008, Paris, France (pp. Paper THoD.2).

Kahn, A. and Kühn, H. and Heinrich, S. and Petermann, K. and Huber, G. and Bradley, J.D.B. and Wörhoff, K. and Pollnau, M. (2009) Low threshold channel waveguide laser in a monocrystalline Nd:(Gd,Lu)2O3 film. In: Conference on Lasers and Electro-Optics, CLEO 2009, 31 May - 5 June 2009, Baltimore, MD, USA (pp. CTuP7).

Khan, M.R.H. and Bernhardi, E.H. and Marpaung, D.A.I. and Burla, M. and Ridder, R.M. de and Wörhoff, K. and Pollnau, M. and Roeloffzen, C.G.H. (2012) Highly stable microwave carrier generation using a dual-frequency distributed feedback laser. In: IEEE International Topical Meeting on Microwave Photonics, MWP 2012, 11-14 September 2012, Noordwijk, The Netherlands (pp. pp. 1-4).

Leinse, A. and Roeloffzen, C.G.H. and Wörhoff, K. and Sengo, G. and Ridder, R.M. de and Driessen, A. (2001) Low loss fiber to chip connection system for telecommunication devices. In: IEEE/LEOS Benelux Chapter 2001 Annual Symposium, December 3, 2001, Brussels, Belgium.

Nguyen, V. Duc and Akça, B.I. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. and Leeuwen, T.G. van and Kalkman, J. (2011) Spectral-domain optical coherence tomography with an arrayed waveguide grating spectrometer. In: European Conferences on Biomedical Optics, 22-26 May 2011, Munich, Germany.

Nguyen, V. Duc and Kalkman, J. and Ismail, N. and Sun, F. and Wörhoff, K. and Driessen, A. and Pollnau, M. and Leeuwen, T.G. van (2009) Design and characterization of SiON integrated optics components for optical coherence tomography. In: Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on, 14-19 June 2009, Munich, Germany (pp. CL.P.14 THU).

Nguyen, V.D. and Leeuwen, T.J. van and Kalkman, J. and Ismail, N. and Sun, F. and Akca, B.I. and Driessen, A. and Pollnau, M. and Ridder, R.M. de and Wörhoff, K. (2010) SiON integrated optics elliptic couplers for Fizeau-based Optical Coherence Tomography. In: 15th European Conference on Integrated Optics, ECIO 2010, 7-9 April 2010, Cambridge, United Kingdom (pp. ThP23).

Noordman, O.F.J. and Wörhoff, K. and Hulst, N.F. van (1995) Second harmonic generation in organic Cerenkov-type and modematching devices. In: 7th European Conference on Integrated Optics, ECIO '95, April 3-6, 1995, Delft, The Netherlands (pp. pp. 89-92).

Peruzzo, Alberto and Matthews, Jonathan and Politi, Alberto and Lobino, Mirko and Zhou, Xiao-Qi and Thompson, Mark G. and O'Brien, Jeremy and Matsuda, Nobuyuki and Ismail, Nur and Wörhoff, Kerstin and Bromberg, Yaron and Lahini, Yoav and Silberberg, Yaron (2010) Quantum random walks circuits with photonic waveguides. In: 15th European Conference on Integrated Optics, ECIO 2010, 7-9 April 2010, Cambridge, United Kingdom (pp. FrJB1).

Pollnau, M. and Akca, B.I. and Ismail, N. and Dongre, C. and Pham, S.V. and Wörhoff, K. and Ridder, R.M. de and Hoekstra, H.J.W.M. (2011) Biophotonic sensors on a microchip for trace-gas detection, DNA and enzyme analysis, Raman spectroscopy, and optical coherence tomography. In: Joint Annual Meeting of the Swiss Physical Society and the Austrian Physical Society, 15-17 June 2011, Lausanne, Switzerland (pp. Paper 213).

Pollnau, M. and Bernhardi, E.H. and Bradley, J.D.B. and Ridder, R.M. de and Wörhoff, K. and Yang, J. and Diemeer, M.B.J. and Driessen, A. (2011) Rare-earth-ion-doped lasers integrated on a silicon chip. In: Joint Annual Meeting of the Swiss Physical Society and the Austrian Physical Society, 15-17 June 2011, Lausanne, Switzerland (pp. Paper 214).

Pollnau, M. and Bradley, J.D.B. and Agazzi, L. and Bernhardi, E.H. and Ay, F. and Wörhoff, K. and Ridder, R.M. de (2009) $Al2O3:Er^3^+$ as a new platform for active integrated optics. In: 11th International Conference on Transparent Optical Networks, ICTON 2009, June 28 - July 2, 2009, Azores (pp. We.D2.1).

Pollnau, M. and Bradley, J.D.B. and Bernhardi, E.H. and Agazzi, L. and Geskus, D. and Dalfsen, K. van and Yang, J. and Ay, F. and Driessen, A. and García-Blanco, S.M. and Wörhoff, K. and Ridder, R.M. de (2012) On-chip integrated amplifiers and lasers utilizing rare-earth-ion activation. In: 8th Nanoscience and Nanotechnology Congress, Nano-TR VIII 2012, 25-29 June 2012, Ankara, Turkey.

Pollnau, M. and Bradley, J.D.B. and Bernhardi, E.H. and Ay, F. and Ridder, R.M. de and Wörhoff, K. (2010) Integrated amplifiers and lasers in Al2O3:Er3+ thin films on a silicon chip. In: IV International Workshop on Photonic and Electronic Materials, 5-7 July 2010, San Sebastian, Spain (pp. p. 44).

Pollnau, M. and Bradley, J.D.B. and Yang, J. and Bernhardi, E.H. and Ridder, R.M. de and Wörhoff, K. (2010) Rare-earth-ion doped waveguide amplifiers and lasers in alumina and polymers. In: Frontiers in Optics, FIO 2010 - Novel Hybrid Integration II, 24-28 October 2010, Rochester, NY.

Pollnau, M. and Dalfsen, K. van and Bernhardi, E.H. and Geskus, D. and Wörhoff, K. and Ridder, R.M. de and García-Blanco, S.M. (2012) Fabrication, operation, and applications of efficient dielectric waveguide lasers. In: International Conference on Advanced Laser Technologies, ALT 2012, 2-6 September 2012, Thun, Switzerland (pp. pp. 150-151).

Pollnau, M. and Geskus, D. and Bernhardi, E.H. and Dalfsen, K. van and Wörhoff, K. and Ridder, R.M. de (2012) Highly efficient solid-state waveguide lasers. In: Advanced Solid-State Photonics, ASSP 2012 - Semiconductor and Waveguide Lasers, 29 January - 3 February 2012, San Diego, CA, USA (pp. AM5A.1).

Pollnau, M. and Dongre, C. and Pham, S.V. and Bernhardi, E.H. and Wörhoff, K. and Ridder, R.M. de and Hoekstra, H.J.W.M. (2012) Optical bio-sensors in microfluidic chips. In: MRS Fall Meeting, 25-30 November 2012, Boston, MA, USA (pp. 486-XX9.01).

Pollnau, Markus and Bernhardi, Edward H. and Wörhoff, Kerstin and Ridder, René M. de (2013) Dual-wavelength narrow-linewidth lasers and their applications. In: Advanced Solid-State Lasers Congress, ASSL 2013, 27 October - 01 November, Paris, France (pp. Paper ATu1A.6).

Pollnau, Markus and Ismail, Nur and Akca, B. Imran and Wörhoff, Kerstin and Ridder, René M. de (2012) Biophotonic sensors on a silicon chip for Raman spectroscopy and optical coherence tomography. In: Silicon Photonics VII, 21-26 January 2012, San Francisco, CA, USA (pp. p. 826602).

Poulios, K. and Fry, D. and Lobino, M. and Matthews, J.C.F. and Meinecke, J.D.A. and Peruzzo, A. and Zhou, X. and Thompson, M.G. and O'Brien, J.L. and Politi, A. and Keil, R. and Szameit, A. and Ismail, N. and Wörhoff, K. and Matsuda, N. (2012) Multi-particle Quantum Walks with 2D & 3D Arrayed Waveguides. In: 16th European Conference on Integrated Optics, ECIO 2012, 18-20 April 2012, Sitges-Barcelona, Spain.

Roeloffzen, C.G.H. and Ridder, R.M. de and Sengo, G. and Wörhoff, K. (2002) Passband flattening and rejection band broadening of a periodic Mach-Zehnder wavelength filter by adding a tuned ring resonator. In: 28th European Conference on Optical Communication, ECOC, 2002, September 9-11, 2002, Copenhagen, Denmark.

Roeloffzen, Chris G.H. and Ridder, René M. de and Sengo, Gabriël and Wörhoff, Kerstin and Driessen, Alfred (2002) Passband flattened interleaver using a Mach- Zehnder interferometer with ring resonator fabricated in SiON waveguide technology. In: IEEE/LEOS Benelux Chapter 2002 Annual Symposium, December 9, 2002, Amsterdam, The Netherlands.

Sengo, G. and Wolferen, H. and Wörhoff, K. and Driessen, A. (2006) Metal mask free dry-etching process for integrated optical devices applying highly photostabilized resist. In: IEEE/LEOS Benelux Chapter 2006 Annual Symposium, November 30 - December 1, 2006, Eindhoven, The Netherlands (pp. pp. 109-112).

Sengo, Gabriel and Wolferen, Henk A.G.M. van and Wörhoff, Kerstin and Driessen, Alfred (2007) Optimized Deep UV hardbake process for metal-free dry-etching of integrated optical devices. In: European Conference on Integrated Optics, ECIO 2007, 25-27 April 2007, Copenhagen, Denmark (pp. ThG 05-THG 05/1).

Shuyi, Gan and Docter, Boudewijn and Klunder, D.J.W. and Hilderink, L.T.H. and Wörhoff, Kerstin (2002) Fabrication of low optical losses Al2O3 layer used for Er3+-doped integrated optical amplifiers. In: IEEE/LEOS Benelux Chapter 2002 Annual Symposium, December 9, 2002, Amsterdam, The Netherlands (pp. pp. 258-261).

Soest, Frank J. van and Wolferen, Henk A.G.M. van and Hoekstra, Hugo J.W.M. and Ridder, René M. de and Wörhoff, Kerstin and Lambeck, Paul V. (2003) Laser interference lithography with highly accurate interferometric alignment. In: IEEE/LEOS Benelux Chapter 2003 Annual Symposium, November 20-21, 2003, Enschede, The Netherlands (pp. pp. 269-272).

Soest, Frank J. van and Wolferen, Henk A.G.M. van and Hoekstra, Hugo J.W.M. and Ridder, René M. de and Wörhoff, Kerstin and Lambeck, Paul V. (2005) Laser interference lithography with highly accurate interferometric alignment. In: Twelfth European Conference on Integrated Optics, ECIO'05, 6-8 Apr 2005, Grenoble, France (pp. pp. 570-573).

Sun, F. and Driessen, A. and Wörhoff, K. (2009) Comparison of SiON Layers Doped with Phosphorous and Boron for Integrated Optics Applications. In: 2009 Annual Symposium of the IEEE Photonics Benelux Chapter, 5-6 November 2009, Brussels, Belgium (pp. pp. 213-216).

Sun, F. and Hussein, M.G. and Wörhoff, K. and Sengo, G. and Driessen, A. (2009) B/P Doping in
 application of 
silicon oxynitride based integrated
 optics. In: European Conference on Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference, CLEO Europe - EQEC 2009, 14-19 June 2009, Munich, Germany (pp. CE5.1 TUE).

Uranga, Amaia and Ay, Feridun and Bradley, Jonathan D.B. and Ridder, René M. de and Wörhoff, Kerstin and Pollnau, Markus (2007) Focused ion beam nano-structuring of photonic Bragg gratings in $Al_2O_3$ waveguides. In: IEEE/LEOS Benelux Chapter 2007, 17-18 December 2007, Brussels, Belgium (pp. pp. 247-250).

Vázquez-Córdova, S.A. and Bernhardi, E.H. and Wörhoff, K. and Garcia Blanco, S.M. and Pollnau, M. (2014) Erbium-doped spiral amplifiers with 20 dB gain on a silicon chip. In: Silicon Photonics and Photonic Integrated Circuits IV, Photonics Europe 2014, 14-17 April 2014, Brussels, Belgium (pp. Paper 913308).

Vázquez-Córdova, S.A. and Yong, Y.S. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2012) Concentration quenching of luminescence lifetime in ytterbium-doped potassium double tungstate waveguide amplifiers. In: 17th Annual Symposium of the IEEE Photonics Benelux Chapter, 29-30 November 2012, Mons, Belgium (pp. pp. 223-226).

Vázquez-Córdova, Sergio and Bernhardi, Edward H. and Wörhoff, Kerstin and Garcia Blanco, Sonia M. and Pollnau, Markus (2014) High-gain spiral amplifiers in a-Al2O3:Er3+ on a silicon chip. In: 17th European Conference on Integrated Optics, 24-27 June 2014, Nice, France (pp. Paper Tu3aR2).

Wörhoff, K. and Lambeck, P.V. and Noordman, O.F.J. and Hulst, N.F. van and Popma, Th.J.A. (1997) Optimization of LPCVD Silicon Oxynitride growth to large refractive index homogeneity and layer thickness uniformity. In: European Symposium on Lasers and Optics in Manufacturing, 16 -20 June, 1997, Munich, Germany (pp. pp. 257-268).

Wörhoff, K. and Ay, F. and Pollnau, M. (2006) Optimization of Low-Loss $AL_{2}O_{3}$ Waveguide Fabrication for Application in Active Integrated Optical Devices. In: Science and Technology of Dielectrics for Active and Passive Photonic Devices, 29 Oct - 3 Nov 2006, Cancun, Mexico (pp. pp. 17-26).

Wörhoff, K. and Bradley, J.D.B. and Agazzi, L. and Geskus, D. and Ay, F. and Kahn, A. and Scheife, H. and Petermann, K. and Huber, G. and Pollnau, M. (2008) Energy-transfer upconversion in $Al_2O_3:Er^{3+}$ thin layers. In: Second International Workshop on Advanced Spectroscopy and Optical Materials, 13-17 July 2008, Gdansk, Poland (pp. Paper 6-O).

Wörhoff, K. and Bradley, J.D.B. and Ay, F. and Pollnau, M. (2007) Low-loss $Al_2O_3$ waveguides for active integrated optics. In: Technical Digest Conference on Lasers and Electro-Optics, CLEO 2007, 6-11 May 2007, Baltimore, MD, USA (pp. CMW5).

Wörhoff, K. and Klein, E.J. and Hussein, M.G. and Driessen, A. (2008) Silicon oxynitride based photonics. In: Proceedings 10th Anniversary International Conference on Transparant Optical Networks (ICTON), 22-26 June 2008, Athens, Greece (pp. pp. 266-269).

Wörhoff, K. and Lambeck, P.V. and Albers, H. and Noordman, O.F.J. and Hulst, N.F. van and Popma, Th.J.A. (1996) Application of highly uniform LPCVD SiOxNy in SHG devices. In: IEEE/LEOS Symposium Benelux Chapter, November 28, 1996, Enschede, The Netherlands (pp. pp. 226-229).

Wörhoff, K. and Noordman, O.F.J. and Hulst, N.F. van and Albers, H. and Lambeck, P.V. (1995) Phase matched second harmonic generation in silicon[oxy]nitride-calix[4]arene waveguides. In: Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim '95, 10-14 July 1995, Makuhari, Chiba-city, Japan (pp. pp. 199-200).

Wörhoff, K. and Noordman, O.F.J. and Hulst, N.F. van and Albers, H. and Lambeck, P.V. (1995) Phase matched second harmonic generation in silicon[oxy]nitride-calix[4]arene waveguide [Poster]. In: MESA-dag, 14 juni 1995, Enschede, The Netherlands.

Wörhoff, K. and Offrein, B.J. and Driessen, A. and Lambeck, P.V. and Bona, G.L. and Popma, Th.J.A. (1998) Birefringence compensation in double-core optical waveguides. In: 24th European Conference on Optical Communication, ECOC, September 20-24, 1998, Madrid, Spain (pp. pp. 605-606).

Wörhoff, K. and Roeloffzen, C.G.H. and Ridder, R.M. de and Sengo, G. and Hilderink, L.T.H. and Driessen, A. (2004) Tolerance of polarization independent waveguides for communication devices. In: Integrated Optics and Photonic Integrated Circuits, 27 April 2004 , Strasbourg, France (pp. pp. 369-380).

Wörhoff, K. and Roeloffzen, C.G.H. and Ridder, R.M. de and Sengo, G. and Hilderink, L.T.H. and Lambeck, P.V. and Driessen, A. (2004) Tolerance and application of polarization independent waveguide for communication devices. In: IEEE/LEOS Benelux Chapter 2004 Annual Symposium, December 2-3, 2004, Ghent, Belgium (pp. pp. 107-110).

Wörhoff, Kerstin and Bernhardi, Edward H. and Bradley, Jonathan D.B. and Yang, Jing and Agazzi, Laura and Ay, Feridun and Ridder, René M. de and Pollnau, Markus (2011) Rare-earth-ion doped amplifiers and lasers integrated on silicon. In: 13th International Conference on Transparent Optical Networks, ICTON 2011, 26-30 June 2011, Stockholm, Sweden.

Wörhoff, Kerstin and Bradley, Jonathan and Ay, Feridun and Geskus, Dimitri and Blauwendraat, Tom and Pollnau, Markus (2008) Optimization of $Al_2O_3:Er^{3+}$ waveguide technology for active integrated optical devices. In: Silicon Photonics and Photonic Integrated Circuits, 7-10 April 2008, Strasbourg, France (pp. p. 699618).

Wörhoff, Kerstin and Ismail, Nur and Akca, B. Imran and Pollnau, Markus and Ridder, René M. de (2011) Silicon oxynitride technology for integrated optical solutions in biomedical applications. In: 13th International Conference on Transparent Optical Networks 2011, 26-30 June 2011, Stockholm, Sweden (pp. pp. 1-4).

Wörhoff, Kerstin and Ridder, René M. de and Lambeck, Paul V. and Driessen, Alfred (1998) Silicon oxynitride in integrated optics. In: IEEE Lasers and Electro-Optics Society Annual Meeting, LEOS, 1-4 December 1998, Orlando, USA (pp. pp. 370-371).

Yang, J. and Dalfsen, K. van and Wörhoff, K. and Ay, F. and Pollnau, M. (2010) High-Gain Al2O3:Nd3+ Integrated Waveguide Amplifiers. In: Symposium K: Rare earth doped materials for optical based technologies, 7-11 June 2010, Strasbourg (pp. p. 53).

Yang, J. and Ay, F. and Lamprecht, T. and Horst, F. and Offrein, B.J. and Driessen, A. and Wörhoff, K. and Pollnau, M. (2010) Al2O3:Nd3+ waveguide amplifiers for use in optical backplanes. In: Conference on Lasers and Electro-Optics, CLEO '10, 16-21 May 2010, San Jose, CA (pp. CWP4).

Yang, J. and Lamprecht, T. and Wörhoff, K. and Driessen, A. and Horst, F. and Offrein, B.J. and Ay, F. and Pollnau, M. (2011) Integrated waveguide amplifiers for optical backplanes. In: International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim, 28 August - 1 September 2011, Sydney, Australia (pp. Paper 4630).

Yong, Y.S. and Vázquez-Córdova, S.A. and Garcia Blanco, S.M. and Aravazhi, S. and Wörhoff, K. and Pollnau, M. (2012) Design of high-gain, small-footprint ytterbium-doped potassium double tungstate waveguide amplifier for short-distance optical interconnects. In: 17th Annual Symposium of the IEEE Photonics Benelux Chapter, 29-30 November 2012, Mons, Belgium (pp. pp. 239-242).

This list was generated on Sat Jul 26 05:32:53 2014 CEST.