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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 25 — Dec. 6, 2010
  • pp: 26107–26112

High-power, broadly tunable, and low-quantum-defect KGd1-xLux(WO4)2:Yb3+ channel waveguide lasers

Dimitri Geskus, Shanmugam Aravazhi, Kerstin Wörhoff, and Markus Pollnau  »View Author Affiliations


Optics Express, Vol. 18, Issue 25, pp. 26107-26112 (2010)
http://dx.doi.org/10.1364/OE.18.026107


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Abstract

In KGd1-xLux(WO4)2:Yb3+ channel waveguides grown onto KY(WO4)2 substrates by liquid phase epitaxy and microstructured by Ar+ beam etching, we produced 418 mW of continuous-wave output power at 1023 nm with a slope efficiency of 71% and a threshold of 40 mW of launched pump power at 981 nm. The degree of output coupling was 70%. By grating tuning in an extended cavity and pumping at 930 nm, we demonstrated laser operation from 980 nm to 1045 nm. When pumping at 973 nm, lasing at 980 nm with a record-low quantum defect of 0.7% was achieved.

© 2010 OSA

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

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 7, 2010
Revised Manuscript: November 12, 2010
Manuscript Accepted: November 14, 2010
Published: November 30, 2010

Citation
Dimitri Geskus, Shanmugam Aravazhi, Kerstin Wörhoff, and Markus Pollnau, "High-power, broadly tunable, and 
low-quantum-defect KGd1-xLux(WO4)2:Yb3+ channel waveguide lasers," Opt. Express 18, 26107-26112 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-25-26107


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