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介质色散对交叉偏振波输出特性的影响

Influence of Material Dispersion on Output Characteristics of Cross-Polarized Wave

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摘要

理论研究了介质色散对钛宝石超短激光脉冲在氟化钡(BaF2)晶体中产生交叉偏振波(XPW)输出特性的影响。通过数值模拟发现, 考虑介质色散效应时, 介质的色散效应使晶体中的XPW转换效率降低, 产生XPW的脉冲宽度大于入射脉冲宽度的1/3, 饱和光强增大。结果表明, 当短激光脉冲驱动时介质色散对XPW产生的影响不能忽略。

Abstract

The influence of material dispersion on the output characteristics of cross-polarized wave (XPW) in BaF2 crystal driven by Ti∶sapphire laser pulses is investigated theoretically. The numerical simulation results reveal that, when the material dispersion is considered, the energy conversion efficiency of the crystal decreases owing to the effect of the dispersion. The pulse duration of XPW is longer than 1/3 duration of the incident pulse, and the saturation intensity increases. The results indicate that the influence of material dispersion on the output characteristics of XPW driven by short laser pulses cannot be neglected.

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中图分类号:O437.4

DOI:10.3788/lop55.061903

所属栏目:非线性光学

基金项目:国家自然科学基金(11304365)、中国博士后科学基金(2014M552123)、武汉科技大学城市学院博士自主科研人才基金(2014CYBSKY002)

收稿日期:2017-12-01

修改稿日期:2017-12-29

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作者单位    点击查看

金丹:武汉科技大学城市学院, 湖北 武汉 430083
金凌辉:武汉科技大学城市学院, 湖北 武汉 430083
龚成:中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室, 湖北 武汉 430071

联系人作者:龚成(gongcheng@wipm.ac.cn)

备注:金丹(1983-), 女, 博士, 讲师, 主要从事理论物理方面的研究。E-mail: 258032659@qq.com

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引用该论文

Jin Dan,Jin Linghui,Gong Cheng. Influence of Material Dispersion on Output Characteristics of Cross-Polarized Wave[J]. Laser & Optoelectronics Progress, 2018, 55(6): 061903

金丹,金凌辉,龚成. 介质色散对交叉偏振波输出特性的影响[J]. 激光与光电子学进展, 2018, 55(6): 061903

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