25 May 2011 High efficiency Yb:YAG thin disk laser at room and cryogenic temperatures
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Yb:YAG thin-disk laser performance at room and cryogenic (80K) temperatures is presented. The Yb:YAG gain media, which is Indium soldered to specialized CuW mounting caps, is cooled using either a pressurized R134A refrigerant system or by a two-phase liquid nitrogen spray boiler. At cryogenic temperatures spontaneous emission measurements reveal sharper transition lines and a decrease in the fluorescence lifetime. Lasing reflects that a true four-level laser. Interchangeable mounting caps allow the same Yb:YAG media to be switched between the two systems. This allows direct comparison of lasing, amplified spontaneous emission, and temperature performance at 15 °C and at -200 oC.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. Carson, N. Vretenar, T. C. Newell, P. Peterson, T. Lucas, W. P. Latham, "High efficiency Yb:YAG thin disk laser at room and cryogenic temperatures", Proc. SPIE 8039, Laser Technology for Defense and Security VII, 80390A (25 May 2011); doi: 10.1117/12.891910; https://doi.org/10.1117/12.891910

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