High efficiency Yb:YAG thin disk laser at room and cryogenic temperatures

T. Carson; N. Vretenar; T. C. Newell; P. Peterson; T. Lucas; W. P. Latham

doi:10.1117/12.891910

25 May 2011 High efficiency Yb:YAG thin disk laser at room and cryogenic temperatures

T. Carson, N. Vretenar, T. C. Newell, P. Peterson, T. Lucas, W. P. Latham

Proceedings Volume 8039, Laser Technology for Defense and Security VII; 80390A (2011) https://doi.org/10.1117/12.891910
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

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.

Citation Download Citation

T. Carson, N. Vretenar, T. C. Newell, P. Peterson, T. Lucas, and 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); https://doi.org/10.1117/12.891910

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