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Opt Express. 2009 Dec 7;17(25):22417-22. doi: 10.1364/OE.17.022417.

Ultrafast laser inscribed Yb:KGd(WO4)2 and Yb:KY(WO4)2 channel waveguide lasers.

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  • 1J. F. Allen Physics Research Laboratories, School of Physics and Astronomy, St Andrews, Fife, Scotland KY16 9SS, UK.


We demonstrate laser action in diode-pumped microchip monolithic cavity channel waveguides of Yb:KGd(WO(4))(2) and Yb:KY(WO(4))(2) that were fabricated by ultrafast laser writing. The maximum output power achieved was 18.6 mW with a threshold of approximately 100 mW from an Yb:KGd(WO(4))(2) waveguide laser operating at 1023 nm. The propagation losses for this waveguide structure were measured to be 1.9 dBcm(-1).

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