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高强度超短脉冲单块BBO晶体的三倍频研究

Third Harmonic Generation of Super Intense Ultrshort Pulse with a Single BBO Crystal

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摘要

对高强度超短脉冲单块BBO晶体产生三倍频的过程进行了理论及实验研究。定量分析入射基频光强度、晶体厚度、晶体失谐角和方位角等因素对三倍频光转换效率和时间波形的影响,并对实验参数进行了优化。针对脉冲宽度100fs、带宽25nm、中心波长810nm、能量为6mJ左右的超短脉冲基频光,采用单块BBO晶体开展了三倍频实验研究,获得了0.8%的三倍频转换效率,并对实验结果进行了分析。在此基础上,进一步提出了提高单块BBO晶体超短脉冲三倍频转换效率的改进措施。

Abstract

The third harmonic generation of the super intense ultrashort pulse with a single β-barium borate (BBO) crystal was studied theoretically and experimentally.The effects of the intensity of the fundamental field,the thickness,the detuned angle and the azimuth angle of the crystal on the conversion efficiency and the pulse shape were analyzed.The parameters of the experiment were optimized.The corresponding experiment was performed for the ultrashort pulse with center wavelength of 810 nm,the pulse width (FWHM) of 100 fs,the bandwidth of 25 nm and the pulse energy of about 6 mJ by using a single BBO crystal.The conversion efficiency of the third harmonic generation can approach 0.8%.Analyzing the experimental results,we proposed the methods for improving the conversion efficiency of the third harmonic generation with a single BBO crystal.

Newport宣传-MKS新实验室计划
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中图分类号:O437.1

所属栏目:激光技术

基金项目:四川省青年科技基金项目资助课题(05ZQ026-013)

收稿日期:2007-09-12

修改稿日期:2007-12-29

网络出版日期:0001-01-01

作者单位    点击查看

刁煦:四川大学 电子信息学院,成都 610064
李琨:四川大学 电子信息学院,成都 610064
张彬:四川大学 电子信息学院,成都 610064
李恪宇:中国工程物理研究院 激光聚变研究中心,四川 绵阳 621900
朱启华:中国工程物理研究院 激光聚变研究中心,四川 绵阳 621900
黄小军:中国工程物理研究院 激光聚变研究中心,四川 绵阳 621900

联系人作者:刁煦(sswassw@yahoo.com.cn)

备注:刁煦|男|(1982-)(汉族),四川自贡人,硕士,主要研究激光技术。

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引用该论文

DIAO Xu,LI Kun,ZHANG Bin,LI Ke-yu,ZHU Qi-hua,HUANG Xiao-jun. Third Harmonic Generation of Super Intense Ultrshort Pulse with a Single BBO Crystal[J]. Opto-Electronic Engineering, 2008, 35(4): 115-120

刁煦,李琨,张彬,李恪宇,朱启华,黄小军. 高强度超短脉冲单块BBO晶体的三倍频研究[J]. 光电工程, 2008, 35(4): 115-120

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