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紫外超短脉冲激光放大过程中脉宽压缩的方案设计

Scheme design of pulse duration compression in amplification of untraviolet ultrashort pulse laser

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摘要

采用放电泵浦KrF准分子激光放大器放大波长为248.4 nm的紫外超短脉冲激光。对于能量为0.7 mJ、脉宽为550 fs的输入脉冲,在光束直径保持10 mm不变的条件下,能量放大到15 mJ,脉宽展宽到1 200 fs。为了压缩输出脉冲宽度,分析了群速度色散和自相位调制效应对脉宽展宽的影响。利用棱镜对,采用4种不同的实验方案对脉冲引入负的线性频率啁啾,以补偿KrF准分子激光放大器CaF2窗镜中的群速度色散和自相位调制对脉冲引入的正的线性频率啁啾。结果表明:在放大器之前放置棱镜对的方式可以在保持输出脉冲能量为15 mJ的同时,在棱镜对间距为110 cm的条件下,将输出脉冲宽度压缩到370 fs,输出波长为248.4 nm、带宽为0.4 nm。

Abstract

The discharge-pumped KrF excimer was used to amplify ultraviolet ultrashort pulse laser with wavelength of 248.4 nm.Thelaser energy was amplified from 0.7 mJ to 15 mJ,and the pulse duration was broadened from 550 fs to 1 200 fs,with the beam diameter of 10 mm unchanged. To compress the output pulse duration,the effects of group velocity dispersion and self phase modulation were analyzed,and experimental schemes with four different prism pair were used to introduce negative frequency chirp into the pulse laser in order to compensate the positive frequency chirp introduced by group velocity dispersion and self phase modulation in the CaF2 windows of the amplifer.The results show that if the prism pair is put before the amplifier,the pulse duration can be compressed to 370 fs when the length of the prism pair is 110 cm,while the output energy remains 15 mJ,the output wavelength is 248.4 nm,and the bandwidth is 0.4 nm.

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中图分类号:TN24

DOI:10.3788/hplpb20102201.0029

所属栏目:高功率激光与光学

基金项目:国家高技术发展计划项目.

收稿日期:2008-12-28

修改稿日期:2009-07-22

网络出版日期:0001-01-01

作者单位    点击查看

徐永生:中国原子能科学研究院,北京 102413
汤秀章:中国原子能科学研究院,北京 102413
张骥:中国原子能科学研究院,北京 102413
王雷剑:中国原子能科学研究院,北京 102413
张海峰:中国原子能科学研究院,北京 102413

联系人作者:徐永生(xuys212@163.com)

备注:徐永生|助研|主要从事高功率准分子激光与物质相互作用研究|(1979-),男,江苏沛县人,硕士.

【1】Backus Sterling,Durfee Ⅲ Charles G,Murnane Margaret M,et al.High power ultrafast lasers[J].Rev Sci Instrum,1998,69(3):1207-1223.

【2】Morgner U,Kartner F X,Cho S H,et al.Sub-two-cycle pulse from a Kerr-lens mode locked Ti sapphire laser[J].Opt Lett,1999,24(6):411-413.

【3】陈晓伟,朱毅,刘军,等.飞秒激光脉冲在正色散固体材料中的自压缩[J].物理学报,2005,54(11):5178-5183.(Chen Xiaowei,Zhu Yi,Liu Jun,et al. Self-compression of femtosecond laser pulses in normally dispersive solid material. Acta Physica Sinica,2005,54(11):5178-5183)

【4】汤秀章,张海峰,李静,等.高功率紫外超短脉冲激光[J].原子能科学技术,2002,36(2):112-116.(Tang Xiuzhang,Zhang Haifeng,Li Jing,et al. High power UV ultrashort pulse laser. Atomic Energy Science and Technology,2002,36(2):112-116)

【5】Nagy T,Simon P,Szatmári S. Spectral development of short pulses in KrF gain modules[J]. Appl Phys B,2000,71(4):495-501.

【6】Shaw M J,Dvill E J,Hirst G J,et al. On the origin of the dip in the KrF laser gain spectrum[J].J Chem Phys,1996,105:1815-1824.

【7】Agrawal G P.非线性光纤光学原理及应用[M].北京:电子工业出版社,2002:26-74.(Agrawal G P. Nonlinear fiber optics & applications of nonlinear fiber optics. Beijing:Publishing House of Electronics Industry,2002:26-74)

【8】Jean-Claude D,Rudolph W. Ultrashort laser pulse phenomena[M]. New York:Academic Press,1996:75-81

引用该论文

Xu Yongsheng,Tang Xiuzhang,Zhang Ji,Wang Leijian,Zhang Haifeng. Scheme design of pulse duration compression in amplification of untraviolet ultrashort pulse laser[J]. High Power Laser and Particle Beams, 2010, 22(1): 29-35

徐永生,汤秀章,张骥,王雷剑,张海峰. 紫外超短脉冲激光放大过程中脉宽压缩的方案设计[J]. 强激光与粒子束, 2010, 22(1): 29-35

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