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Proceedings Paper

Thermal and stress characterization of various thin disk laser configurations at room temperature
Author(s): N. Vretenar; T. Carson; P. Peterson; T. Lucas; T. C. Newell; W. P. Latham
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Paper Abstract

Operational performance of kilowatt-class thin-disk ceramic and single crystal Yb:Yag lasers is presented. High pump power is applied to various thin-disk assemblies on two different test beds. The assemblies are composed of ASE caps, 200μm gain media, and heat sinks made of SiC, sapphire, or diamond. A novel mounting and cooling process is described. FEA modeling of the assemblies is performed using COMSOL stress and thermal computations to understand and quantify thermal and stress effects on beam quality and laser output power. Under increased pump power, the thin-disk can deform 5-10 μm in the center, destroying cavity stability. This is observed experimentally. The results of this work indicate that a single thin-disk laser could simultaneously produce high beam quality and high power if novel thermal management techniques are employed.

Paper Details

Date Published: 15 February 2011
PDF: 9 pages
Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 79120B (15 February 2011); doi: 10.1117/12.879231
Show Author Affiliations
N. Vretenar, The Univ. of New Mexico (United States)
T. Carson, Air Force Research Lab. (United States)
P. Peterson, Boeing LTS Inc. (United States)
T. Lucas, Boeing LTS Inc. (United States)
T. C. Newell, Air Force Research Lab. (United States)
W. P. Latham, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 7912:
Solid State Lasers XX: Technology and Devices
W. Andrew Clarkson; Norman Hodgson; Ramesh Shori, Editor(s)

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