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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 9 — Apr. 26, 2010
  • pp: 8853–8858

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

D. Geskus, S. Aravazhi, C. Grivas, K. Wörhoff, and M. Pollnau  »View Author Affiliations

Optics Express, Vol. 18, Issue 9, pp. 8853-8858 (2010)

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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.

© 2010 OSA

OCIS Codes
(230.7380) Optical devices : Waveguides, channeled
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 1, 2010
Revised Manuscript: April 1, 2010
Manuscript Accepted: April 6, 2010
Published: April 13, 2010

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

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