| 碘激光的H2振动受激拉曼阈值研究 |
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| 引用本文： | 刘栋,蔡向龙,何山,周冬健,郭敬为,金玉奇.碘激光的H2振动受激拉曼阈值研究[J].强激光与粒子束,2017,29(5):051001. |
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| 作者姓名： | 刘栋 蔡向龙 何山 周冬健 郭敬为 金玉奇 |
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| 作者单位： | 1.中国科学院 大连化学物理研究所, 化学激光重点实验室, 辽宁 大连 1 1 6023 |
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| 摘 要： | 首次实现了脉冲光解碘激光作为基频光的氢气振动受激拉曼变频,对碘激光的波长转换有着重要意义。在碘激光单脉冲能量100~130 mJ(脉宽100 ns)的条件下, 采用双次聚焦技术降低了高压氢气的振动受激拉曼变频的阈值,获得了波长为2900 nm中红外激光,光子转化效率最高达到8.7%。实验发现当拉曼介质氢气气压大于1 MPa后,一级斯托克斯光的拉曼转化效率不再随气压变化,并对这一现象进行了理论分析和归属。
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| 关 键 词： | 振动受激拉曼变频 碘激光 量子转化效率 拉曼增益 |
| 收稿时间： | 2016-11-17 |
Vibrational stimulated Raman conversion threshold of H2 pumped by iodine laser |
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| Affiliation: | 1.Key Laboratory of Chemical Laser,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China |
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| Abstract: | The hydrogen vibrational stimulated Raman scattering (SRS) pumped by a photolytic iodine laser (PIL) has been demonstrated for the first time. Under the condition of PIL pulse energy of 100-130 mJ (100 ns), double pass configuration is applied to reduce the SRS threshold successfully. SRS laser of 2900 nm is obtained and the photon conversion efficiency reaches 8.7%. The conversion efficiency of the first stokes light is found not affected by the pressure of hydrogen, once it is more than 1 MPa. Theoretical analysis is applied to explain this phenomenon. |
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