Thermal analysis in a solar pumped laser for Mg energy cycle

Behgol Bagheri; Shgeaki Uchidat

doi:10.1117/12.928552

11 October 2012 Thermal analysis in a solar pumped laser for Mg energy cycle

Behgol Bagheri, Shgeaki Uchidat

Proceedings Volume 8485, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration IX; 84850B (2012) https://doi.org/10.1117/12.928552
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

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.

Citation Download Citation

Behgol Bagheri and Shgeaki Uchidat "Thermal analysis in a solar pumped laser for Mg energy cycle", Proc. SPIE 8485, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration IX, 84850B (11 October 2012); https://doi.org/10.1117/12.928552

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KEYWORDS

Rod lasers

Solar energy

Absorption

Magnesium

Fresnel lenses

Solar radiation

Mirrors

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