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Proceedings Paper

Thermal analysis in a solar pumped laser for Mg energy cycle
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Paper Abstract

Thermal analysis of a high-power cw solar-pumped laser under development as a magnesium energy cycle driver has been conducted experimentally and analytically. The laser system is equipped with a Fresnel lens and a cone-shaped secondary mirror chamber (SMC). The SMC realizes a hybrid-pumping scheme combining axial- and side-pumping configurations to enhance solar light absorption to a rod-shaped laser medium. A non-uniform temperature profile was obtained during experiments due to combination of volumetric heating and surface cooling, which leads to a nonuniform variation of index of refraction in the laser medium. The thermal lensing and thermal stress-induced birefringence are analyzed.

Paper Details

Date Published: 11 October 2012
PDF: 8 pages
Proc. SPIE 8485, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration IX, 84850B (11 October 2012); doi: 10.1117/12.928552
Show Author Affiliations
Behgol Bagheri, The Univ. of Tokyo (Japan)
Shgeaki Uchidat, The Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 8485:
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration IX
Roland Winston; Jeffrey M. Gordon, Editor(s)

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