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非共线角与相位匹配角对YCOB晶体OPCPA增益光谱影响的研究

Influence of Non-Collinear Angle and Phase Matching Angle on YCOB-OPCPA Gain Spectra

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摘要

主要通过理论和实验研究相位匹配角和非共线角对三硼酸钙钇(YCOB)晶体光参量啁啾脉冲放大(OPCPA)的放大光谱产生的影响。理论上,通过数值模拟计算发现,基于YCOB-OPCPA的放大光谱对相位匹配角和非共线角的变化均比较敏感,当相位匹配角或非共线角有微小变化时,增益光谱将会出现中心波段漂移和窄化现象,但当非共线角在2.80°~2.91°之间变化时,总能找到一个理想的相位匹配角与之匹配,满足带宽大于80 nm的宽带OPCPA放大。为了获得高效率宽带OPCPA放大输出,提出一种基于高精密CCD的非共线角的测量方法,并利用该方法在实验中研究了不同非共线角下YCOB晶体OPCPA的光谱增益特性,并获得宽带放大光谱,为单次OPCPA调试实验提供参考。

Abstract

Theoretical and experimental investigations are carried out to determine the influence of the phase matching angle and non-collinear angle on the optical parametric chirped pulse amplification (OPCPA) amplified spectrum of yttrium calcium oxyborate (YCOB) crystal. In theory, through the numerical simulation calculation, it is found that the amplified spectrum of YCOB-OPCPA is sensitive to the phase matching angle and non-collinear angle. When the phase matching angle or non-collinear angle is changed even in a small range, center wavelength drifting and narrowing phenomenon will occur in the gain spectrum. However, when the non-collinear angle is between 2.80° and 2.91°, there is always a phase matching angle that can match the non-collinear angle to satisfy the OPCPA output of more than 80 nm broadband with high power. With the purpose of getting high efficiency and broadband OPCPA output, a method to measure the non-collinear angle accurately based on high accurate CCD is proposed. With this method, the YCOB-OPCPA gain spectrum characteristics based on different non-collinear angles are researched, and the broadband OPCPA gain spectrum is acquired. The experimental results can provide a reference for single-shot pulse OPCPA experiments.

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中图分类号:O437.4

DOI:10.3788/cjl201441.0815001

所属栏目:光谱学

责任编辑:殷建芳  信息反馈

基金项目:国家自然科学基金(61378030)

收稿日期:2014-01-22

修改稿日期:2014-03-04

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马林:中国科学院上海光学精密机械研究所强场激光物理国家重点实验室, 上海 201800中国科学院大学, 北京 100049
於亮红:中国科学院上海光学精密机械研究所强场激光物理国家重点实验室, 上海 201800
徐露:中国科学院上海光学精密机械研究所强场激光物理国家重点实验室, 上海 201800
储玉喜:中国科学院上海光学精密机械研究所强场激光物理国家重点实验室, 上海 201800
梁晓燕:中国科学院上海光学精密机械研究所强场激光物理国家重点实验室, 上海 201800

联系人作者:马林(maxy@siom.ac.cn)

备注:马林(1989—),男,硕士研究生,主要从事超短高能激光放大方面的研究。

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引用该论文

Ma Lin,Yu Lianghong,Xu Lu,Chu Yuxi,Liang Xiaoyan. Influence of Non-Collinear Angle and Phase Matching Angle on YCOB-OPCPA Gain Spectra[J]. Chinese Journal of Lasers, 2014, 41(8): 0815001

马林,於亮红,徐露,储玉喜,梁晓燕. 非共线角与相位匹配角对YCOB晶体OPCPA增益光谱影响的研究[J]. 中国激光, 2014, 41(8): 0815001

被引情况

【1】夏茂鹏,李健军,高冬阳,胡友勃,庞伟伟,郑小兵. 基于相关光子的多模式空间相关性定标光电倍增管的量子效率. 光学学报, 2015, 35(6): 612006--1

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