Microstructured KY(WO4)2:Gd3+, Lu3+, Yb3+ channel waveguide laser

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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

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Abstract:Epitaxially grown, 2.4-μm-thin layers of KY(WO4)2:Gd3+, Lu3+, Yb3+, which exhibit a high refractive index contrast with respect to the undoped KY(WO4)2 substrate, have been microstructured by Ar beam milling, providing 1.4-μm-deep ridge channel waveguides of 2 to 7 μm width, and overgrown by an undoped KY(WO4)2 layer. Channel waveguide laser operation was achieved with a launched pump power threshold of only 5 mW, a slope efficiency of 62% versus launched pump power, and 76 mW output power.
Item Type:Article
Additional information:Open access article
Copyright:© 2010 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/70979
Official URL:http://dx.doi.org/10.1364/OE.18.008853
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