20 February 2015 A continuous wave Fe:ZnSe laser pumped by efficient Er:Y2O3 laser
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Fe:ZnSe lasers have been pumped by several types of diode-pumped solid state laser, including Cr:Er:YSGG (2800 nm),1 Cr:CdSe (2970 nm),2 and Er:YAG (2698 nm,3 2936 nm4). None of these sources has exceeded 1.5 W of true continuous-wave (CW) output power. In this work, we report demonstration of a CW Fe:ZnSe laser pumped by a 10 W Er:Y2O3 laser emitting at 2740 nm,5 which had not been previously attempted. The Er:Y2O3 pump laser was characterized with respect to propagation losses, beam quality, mode size, and pointing stability. It was determined that the limit of output power from the Fe:ZnSe laser was limited by the output stability of the pump laser. The Fe:ZnSe laser operated with < 22% slope efficiency and 800 mW output power was achieved at approximately 4050 nm.
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Jonathan W. Evans, Jonathan W. Evans, Tigran Sanamyan, Tigran Sanamyan, Patrick A. Berry, Patrick A. Berry, } "A continuous wave Fe:ZnSe laser pumped by efficient Er:Y2O3 laser", Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 93420F (20 February 2015); doi: 10.1117/12.2079757; https://doi.org/10.1117/12.2079757

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