We studied possible techniques for increasing the power-to-power conversion efficiency of the Ce:Nd:YAG solar laser using a simulation model developed with the Monte-Carlo photon tracing method framework. It is suggested that the multi-passage of photons through a medium can enhance the absorption probability. The effectiveness of the multi-pass scheme is experimentally investigated. The application of the multi-pass pumping scheme for Ce:Nd:YAG solar lasers is demonstrated. It is shown that the pumping efficiency in the Ce:Nd:YAG solar laser with the multi-pass pumping cavity is increased by 20%, paving the way for higher power-to-power conversion efficiency.

中文翻译：

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多通道方案中的侧向泵浦高效 Ce:Nd:YAG 太阳能激光器

我们使用蒙特卡罗光子追踪方法框架开发的仿真模型研究了提高 Ce:Nd:YAG 太阳激光器功率到功率转换效率的可能技术。建议光子多次通过介质可以提高吸收概率。对多通道方案的有效性进行了实验研究。演示了多通道泵浦方案在 Ce:Nd:YAG 太阳激光器中的应用。结果表明，具有多通道泵浦腔的 Ce:Nd:YAG 太阳激光器的泵浦效率提高了 20%，为更高的功率到功率转换效率铺平了道路。