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


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
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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