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首页> 外文期刊>Applied physics >Study on long-wave infrared ZnGeP_2 subsequent optical parametric amplifiers with different types of phase matching of ZnGeP_2 crystals
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Study on long-wave infrared ZnGeP_2 subsequent optical parametric amplifiers with different types of phase matching of ZnGeP_2 crystals

机译：ZnGeP_2晶体不同类型匹配的长波红外ZnGeP_2后续光学参量放大器的研究

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摘要

Pumped by a 100 W Q-switched Ho:YAG laser at 2090.7 nm with pulse repetition frequency of 10 kHz, four types of high-power long-wave infrared ZnGeP2 (ZGP) subsequent optical parametric amplifier (OPA) based on optical parametric oscillator (OPO) with different types of phase matching (PM) of ZGP crystals were demonstrated. For the results of 8.2 mu m output characteristics at the full incident pump power, Type-II PM ZGP OPO with Type-II PM ZGP OPA had the best M-2 of 1.8 and lowest average output power of 9.2 W with the narrowest linewidth of 77 nm, while Type-I PM ZGP OPO with Type-I PM ZGP OPA had the worst M-2 of 2.2 and the widest linewidth of 122 nm, and Type-II PM ZGP OPO with Type-I PM ZGP OPA had the highest average output power of 12.6 W, corresponding to overall optical conversion efficiency of 12.6% from Ho to long-wave infrared laser system.
机译：四种类型的高功率长波红外ZnGeP2（ZGP）后继光学参量放大器（OPA）由100 W Q开关的2090.7 nm Ho：YAG激光器泵浦，脉冲重复频率为10 kHz，证明了具有不同类型的ZGP晶体的相位匹配（PM）的OPO。为了在全入射泵浦功率下获得8.2μm的输出特性，具有II型PM ZGP OPA的II型PM ZGP OPO具有1.8的最佳M-2和9.2 W的最低平均输出功率，最窄的线宽为77 nm，而具有I型PM ZGP OPA的I型PM ZGP OPO具有最差的M-2为2.2，最宽的线宽为122 nm，具有II型PM ZGP OPA的II型PM ZGP OPO具有最高的线宽平均输出功率为12.6 W，相当于从Ho到长波红外激光系统的整体光学转换效率为12.6％。

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