Low threshold monocrystalline $Nd:{(Gd,Lu)_2O_3}$ channel waveguide laser

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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

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Abstract:We report the first waveguide laser based on a rare-earth-doped sesquioxide. A 2 μm thick lattice matched Nd(0.5%):${(Gd, Lu)_2O_3}$ film with a nearly atomically flat surface has been epitaxially grown on a $Y_2O_3$ substrate, using pulsed laser deposition. The film has been structured with reactive ion etching and a rib channel waveguide laser has been realized. Laser radiation at 1075 nm and 1079 nm has been observed under 820-nm pumping. The laser possesses a threshold power of about 0.8 mW and a preliminary slope efficiency of 0.5% versus incident pump power. A maximum output power of 1.8 mW has been obtained for 370 mW incident pump power.
Item Type:Article
Additional information:Open access article
Copyright:© 2009 Optical Society of America
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/62798
Official URL:http://dx.doi.org/10.1364/OE.17.004412
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