| 飞秒激光在晶体中传输的级联非线性过程 |
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| 引用本文： | 温静,周维,邓武,张鑫,代万俊,唐菱,王渊承,胡东霞.飞秒激光在晶体中传输的级联非线性过程[J].强激光与粒子束,2012,24(7):1727-1731. |
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| 作者姓名： | 温静 周维 邓武 张鑫 代万俊 唐菱 王渊承 胡东霞 |
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| 作者单位： | 1.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900 |
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| 基金项目： | 国家高技术发展计划项目 |
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| 摘 要： | 系统地回顾了有关级联过程导致的各种非线性效应的工作，指出了级联效应可导致不同光谱成分间出现能量转移现象，且二阶级联过程中产生的白光还能够提供种子光进而得到基于参量放大过程的宽带锥形辐射。在此基础上，进一步研究了入射的基频波长对于超连续白光能量转移效果及产生倍频效率的影响以及二阶级联过程引起的偏振调制现象，指出当入射波长越靠近相位匹配波长时倍频效率越高，发现二阶级联效应还可以引起显著的基频光偏振调制。
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| 关 键 词： | 倍频产生 超连续白光产生 级联效应 参量放大 偏振调制 |
| 收稿时间： | 2011/11/23 |
Cascaded nonlinear processes during propagation of femtosecond laser pulses in nonlinear optical crystals |
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| Wen Jing
,
Zhou Wei
,
Deng Wu
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Zhang Xi
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Dai Wanjun
,
Tang Ling
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Wang Yuancheng
,
Hu Dongxia.Cascaded nonlinear processes during propagation of femtosecond laser pulses in nonlinear optical crystals[J].High Power Laser and Particle Beams,2012,24(7):1727-1731. |
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| Authors: | Wen Jing Zhou Wei Deng Wu Zhang Xi Dai Wanjun Tang Ling Wang Yuancheng Hu Dongxia |
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| Affiliation: | 1.Research Center of Laser Fusion,CAEP,P.O.Box 919-988,Mianyang 621900,China |
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| Abstract: | This paper reviews the authors’ recent work on cascaded nonlinear processes, revealing that cascaded nonlinear processes can lead to energy transfer between different wavelengths and spectral broadening caused by the second-order cascaded processes can provide the seed for a broadband conical emission. It further shows the relation between the input fundamental wavelength and the energy transfer effect caused by the supercontinuum generation: higher conversion efficiency is got when the input wavelength approaches the phase-matching wavelength. The significant fundamental polarization modulation caused by second order cascaded nonlinear processes is also investigated. |
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| Keywords: | second harmonic generation supercontinuum generation cascaded processes optical parametric amplification polarization modulation |
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