Conversion-efficiency improvement during broadband optical parametric amplification
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摘要: 建立了宽带光参量放大数值模拟平台，并基于此对宽带光参量放大系统的能量转换效率提升进行优化设计，根据模拟计算结果可以对实验中能够达到的最优化能量转换效率进行预判。建立了验证实验平台并进行了实验，研究并攻克了实验中遇到的参量荧光抑制、信号光，泵浦光空间精确匹配、脉宽精确匹配、时间波形整形等关键技术难点。在抑制参量荧光的同时实现了宽带光参量放大过程能量转换效率的提升，在单级宽带光参量放大过程中获得了30%的能量转换效率。Abstract: We simulated the amplification process during the broadband optical parametric amplification, and we proposed an improved design for high conversion-efficiency during broadband optical parametric amplification based on our simulation result. We carried out an experimental research based on our design. After our research on the key technologies, such as spatial shaping, temporal shaping, superfluorescence suppression, bandwidth matching, we increased the conversion efficiency with suppression of the superfluorescence. The conversion efficiency with our one-stage optical parametric amplification could reach 30%.
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