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Proceedings Paper

High efficiency Yb:YAG thin disk laser at room and cryogenic temperatures
Author(s): T. Carson; N. Vretenar; T. C. Newell; P. Peterson; T. Lucas; W. P. Latham
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Paper 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.

Paper Details

Date Published: 25 May 2011
PDF: 6 pages
Proc. SPIE 8039, Laser Technology for Defense and Security VII, 80390A (25 May 2011); doi: 10.1117/12.891910
Show Author Affiliations
T. Carson, Air Force Research Lab. (United States)
N. Vretenar, Ctr. for High Technology Materials, The Univ. of New Mexico (United States)
T. C. Newell, Air Force Research Lab. (United States)
P. Peterson, Boeing LTS Inc. (United States)
T. Lucas, Boeing LTS Inc. (United States)
W. P. Latham, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 8039:
Laser Technology for Defense and Security VII
Mark Dubinskii; Stephen G. Post, Editor(s)

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