15 May 2018 5.04% system slope efficiency solar-pumped Nd:YAG laser by a heliostat–parabolic mirror system
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Abstract
We demonstrated a solar-pumped laser with a heliostat–parabolic mirror system. A designed conical pump cavity with a water-filled quartz tube lens was used to couple efficiently the concentrated solar radiation from the focal zone of the primary concentrator into a 5.5-mm-diameter, 95-mm-length grooved Nd:YAG crystal rod within a gold-plated conical pump cavity. For 1.0-m2 effective solar radiation collection area, 20.1-W continuous-wave (CW) output laser power was obtained, corresponding to a total system slope efficiency of 5.04%. This value was 1.31 times higher than the previous with the same solar facility. For 1.5-m2 effective collection area, 34.6-W CW output laser power was achieved at the total system slope efficiency of 4.51%. A strong dependency of laser power on laser rod mounting position was also found.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Zhe Guan, Changming Zhao, Haiyang Zhang, Jinhua Li, Dongbing He, Joana Almeida, Claudia R. Vistas, Dawei Liang, "5.04% system slope efficiency solar-pumped Nd:YAG laser by a heliostat–parabolic mirror system," Journal of Photonics for Energy 8(2), 027501 (15 May 2018). https://doi.org/10.1117/1.JPE.8.027501 Submission: Received 8 January 2018; Accepted 30 April 2018
Submission: Received 8 January 2018; Accepted 30 April 2018
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