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How to harvest efficient laser from solar light
Author(s): Changming Zhao; Zhe Guan; Haiyang Zhang
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Paper Abstract

Solar Pumped Solid State Lasers (SPSSL) is a kind of solid state lasers that can transform solar light into laser directly, with the advantages of least energy transform procedure, higher energy transform efficiency, simpler structure, higher reliability, and longer lifetime, which is suitable for use in unmanned space system, for solar light is the only form of energy source in space.

In order to increase the output power and improve the efficiency of SPSSL, we conducted intensive studies on the suitable laser material selection for solar pump, high efficiency/large aperture focusing optical system, the optimization of concave cavity as the second focusing system, laser material bonding and surface processing. Using bonded and grooved Nd:YAG rod as laser material, large aperture Fresnel lens as the first stage focusing element, concave cavity as the second stage focusing element, we finally got 32.1W/m2 collection efficiency, which is the highest collection efficiency in the world up to now.

Paper Details

Date Published: 15 February 2018
PDF: 13 pages
Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105111N (15 February 2018); doi: 10.1117/12.2291264
Show Author Affiliations
Changming Zhao, Beijing Institute of Technology (China)
Zhe Guan, Beijing Institute of Technology (China)
Haiyang Zhang, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 10511:
Solid State Lasers XXVII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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