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Journal Articles Solar Energy Materials and Solar Cells Year : 2016

High-efficiency solar-pumped TEM00-mode Nd:YAG laser

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Abstract

Here we report a significant progress in solar-pumped laser slope efficiency and collection efficiency by pumping a 4.0mm diameter grooved Nd:YAG single-crystal rod with a heliostat-parabolic mirror solar energy concentration system. The incoming solar radiation is firstly collected and focused by the system. An ellipsoid-shaped fused silica concentrator is then used to further compress the concentrated solar radiation into the grooved rod within a 2V-shaped pumping cavity. 4.5W continuous-wave TEM00 -mode (M 2≤1.1) 1064nm solar laser power is finally measured, attaining 2.36% laser slope efficiency, which is 3.37 and 2.91 times higher than previous records by Fresnel lens and parabolic mirror respectively. Record-high TEM00 -mode solar laser collection efficiency of 4.0W/m2 is also achieved
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Dates and versions

hal-01484091 , version 1 (06-03-2017)

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Dawei Liang, Joana Almeida, Cláudia R. Vistas, Emmanuel Guillot. High-efficiency solar-pumped TEM00-mode Nd:YAG laser. Solar Energy Materials and Solar Cells, 2016, 145, pp.397-402. ⟨10.1016/j.solmat.2015.11.001⟩. ⟨hal-01484091⟩
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