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17 April 2006 Free-running and Q-switched performance of a diode-pumped Er:Yb:YAG laser emitting at 1.65 μm
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Abstract
Pulsed Er3+:Yb3+:YAG is a novel crystalline diode-pumped laser capable of delivering high pulse energies in the 1.5- 1.7μm "eye-safe" region. This work reports efficient lasing in long-pulse and in Q-switched mode, with pulse energies in the order of 10's of mJ, employing standard 960-nm quasi-cw semiconductor laser arrays in a direct transverse diodepumping configuration. In free-running mode, 83mJ output, 15% slope efficiency and 0.24J pump threshold have been attained. Q-switched operation was realized with a "frustrated total internal reflection (FTIR)" device, yielding 12.5mJ single pulses of 41-ns FWHM duration with smooth temporal and spatial profiles. Pump temperature-tuning and pulse duration effects on laser performance were also investigated, whereas pumping parameters optimizing pulse energy and efficiency were determined.
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Efstratios Georgiou, Olivier Musset, and Jean-Pierre Boquillon "Free-running and Q-switched performance of a diode-pumped Er:Yb:YAG laser emitting at 1.65 μm", Proc. SPIE 6190, Solid State Lasers and Amplifiers II, 619009 (17 April 2006); https://doi.org/10.1117/12.662246
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