晶体角度跟随三倍频效率控制技术

赵润昌; 李平; 李海; 张军伟; 耿远超; 李志军; 粟敬钦

doi:10.11884/HPLPB201426.102007

强激光与粒子束

晶体角度跟随三倍频效率控制技术

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赵润昌, 李平, 李海, 张军伟, 耿远超, 李志军, 粟敬钦. 2014: 晶体角度跟随三倍频效率控制技术, 强激光与粒子束, null(10): 102007. doi: 10.11884/HPLPB201426.102007

引用本文:

赵润昌, 李平, 李海, 张军伟, 耿远超, 李志军, 粟敬钦. 2014: 晶体角度跟随三倍频效率控制技术, 强激光与粒子束, null(10): 102007. doi: 10.11884/HPLPB201426.102007

Zhao Runchang, Li Ping, Li Hai, Zhang Junwei, Geng Yuanchao, Li Zhijun, Su Jingqin. 2014: Third harmonic efficiency control with crystal angular following, High Power Lase and Particle Beams, null(10): 102007. doi: 10.11884/HPLPB201426.102007

Citation:

Zhao Runchang, Li Ping, Li Hai, Zhang Junwei, Geng Yuanchao, Li Zhijun, Su Jingqin. 2014: Third harmonic efficiency control with crystal angular following, High Power Lase and Particle Beams, null(10): 102007. doi: 10.11884/HPLPB201426.102007

晶体角度跟随三倍频效率控制技术

中国工程物理研究院激光聚变研究中心,四川绵阳,621900

Third harmonic efficiency control with crystal angular following

摘要: 基于推导的倍频晶体匹配角与温度关系的理论分析，揭示了温度对频率转换过程影响的热光物理机制。数值模拟了频率转换过程中二倍频与三倍频晶体的匹配角热敏感性。由于不同晶体材料热敏感性的差异性，实验获得了激光装置中所用晶体材料的匹配角随温度变化的关系曲线。理论分析了不同输入功率密度情况下匹配角失谐对三倍频过程的影响，并在线验证了温度变化导致匹配角失谐，进而引起三倍频转换效率的下降。根据实验获得的晶体匹配角的热敏感性参数，提出利用晶体角度跟随方法进行三倍频转换效率补偿，实现了三倍频能量的稳定输出。
- 非线性光学 /
- 频率转换 /
- 角度跟随 /
- 效率补偿 /
- 热光系数
Abstract: Based on the analytical solution of the dependence of phase matching angle on the crystal temperature,we illus-trate the thermo-optic physical mechanism of temperature influence on the frequency conversion.The thermal sensitivity of the doubler and tripler crystals are numerically simulated respectively.Due to such sensitivity discrepancy among various crystals,the phase matching angle curve regarding the crystal temperature variation in our laser facility is obtained in experiment.The influ-ence of PM angular detune on frequency conversion is theoretically analyzed under different input intensities,which is demonstra-ted by the conversion efficiency decline induced by temperature variation.According to the thermal sensitivity parameter obtained in experiments,we compensate the conversion efficiency with the crystal angle following,resulting in stable output of third har-monic energy.

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晶体角度跟随三倍频效率控制技术

中国工程物理研究院激光聚变研究中心,四川绵阳,621900

关键词:

摘要: 基于推导的倍频晶体匹配角与温度关系的理论分析，揭示了温度对频率转换过程影响的热光物理机制。数值模拟了频率转换过程中二倍频与三倍频晶体的匹配角热敏感性。由于不同晶体材料热敏感性的差异性，实验获得了激光装置中所用晶体材料的匹配角随温度变化的关系曲线。理论分析了不同输入功率密度情况下匹配角失谐对三倍频过程的影响，并在线验证了温度变化导致匹配角失谐，进而引起三倍频转换效率的下降。根据实验获得的晶体匹配角的热敏感性参数，提出利用晶体角度跟随方法进行三倍频转换效率补偿，实现了三倍频能量的稳定输出。

English Abstract

Third harmonic efficiency control with crystal angular following

中国工程物理研究院激光聚变研究中心,四川绵阳,621900

Keywords:

Abstract: Based on the analytical solution of the dependence of phase matching angle on the crystal temperature,we illus-trate the thermo-optic physical mechanism of temperature influence on the frequency conversion.The thermal sensitivity of the doubler and tripler crystals are numerically simulated respectively.Due to such sensitivity discrepancy among various crystals,the phase matching angle curve regarding the crystal temperature variation in our laser facility is obtained in experiment.The influ-ence of PM angular detune on frequency conversion is theoretically analyzed under different input intensities,which is demonstra-ted by the conversion efficiency decline induced by temperature variation.According to the thermal sensitivity parameter obtained in experiments,we compensate the conversion efficiency with the crystal angle following,resulting in stable output of third har-monic energy.

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晶体角度跟随三倍频效率控制技术

Third harmonic efficiency control with crystal angular following

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晶体角度跟随三倍频效率控制技术

English Abstract

Third harmonic efficiency control with crystal angular following

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