Author Publications

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Number of items: 49.

2014

Bernhardi, E.H. and Agazzi, L. and Wörhoff, K. and Ridder, R.M. de and Pollnau, M. (2014) Spectroscopy and ultra-narrow-linewidth lasers in rare-earth-doped amorphous $Al_2O_3$ waveguides on a silicon chip. In: International Conference on Luminescence, ICL 2014, 13-18 July 2014, Wrocław, Poland (pp. Paper O-25).

2013

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 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

2012

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 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. (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).

Agazzi, Laura (2012) Spectroscopic excitation and quenching processes in rare-earth-ion-doped Al2O3 and their impact on amplifier and laser performance. thesis.

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

Geskus, D. and Aravazhi, S. and Bernhardi, E.H. and Agazzi, L. and García-Blanco, S.M. and Pollnau, M. (2012) Ultra-high, broadband gain in a lattice-engineered, Yb-doped double tungstate channel waveguide. In: 16th European Conference on Integrated Optics, ECIO 2012, 18-20 April 2012, Sitges-Barcelona, Spain.

Geskus, D. and Aravazhi, S. and Bernhardi, E.H. and Agazzi, L. and García-Blanco, S.M. and Pollnau, M. (2012) 150 dB/cm gain over 55 nm wavelength range near 1 µm in an Yb-doped waveguide amplifier. In: Conference on Lasers and Electro-Optics: Science and Innovations, CLEO: S and I, 6-11 May 2012, San Jose, CA, USA (pp. Paper CM1A.6).

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.

2011

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 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 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).

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.

2010

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 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 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, 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

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).

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 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) 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 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).

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. (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 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, 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 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

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

2009

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.

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).

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 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, 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).

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).

2008

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).

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. 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).

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).

This list was generated on Sat Dec 20 05:37:36 2014 CET.