Hongfei Qi, Yan Liu, Lanling Lan, Yuanyuan Zhang, Xiuhua Ma
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引用次数: 0
Abstract
Uniform side-pumping can reduce the thermal stress of laser crystal rod and is an effective method to achieve high power laser output. In order to realize the uniform side-pumping of the laser crystal rod, a solar concentrating system based on plane mirrors and linear Fresnel lens array is proposed. Rays tracing shows that the concentrating efficiency of solar concentrating system and the uniformity of the light spot reach 66.5 and 98.5% with optimization. The temperature distribution in the laser crystal rod is calculated by Comsol software. The results show the central temperature and the surface temperature of laser rod are 316 and 306 K, respectively. Base on solving the rate equations, the laser output characteristics are analyzed. The laser output power and the solar-to-laser conversion efficiency are 88.5 W and 3.3%, respectively. This uniform side-pumping configuration provides the new method for developing high power solar-pumped solid-state lasers.
期刊介绍：
Applied Solar Energy is an international peer reviewed journal covers various topics of research and development studies on solar energy conversion and use: photovoltaics, thermophotovoltaics, water heaters, passive solar heating systems, drying of agricultural production, water desalination, solar radiation condensers, operation of Big Solar Oven, combined use of solar energy and traditional energy sources, new semiconductors for solar cells and thermophotovoltaic system photocells, engines for autonomous solar stations.
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