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Nonlinear compression of picosecond chirped pulse from thin-disk amplifier system through a gas-filled hollow-core fiber

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：TN929.11[电子电信—通信与信息系统;电子电信—信息与通信工程] O437[机械工程—光学工程;理学—光学;理学—物理]
作者机构：[1]School of Physics Science and Engineering, Tongji University, Shanghai 200092, China, [2]State Key Laboratory of High Field Laser Physics, Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China, [3]University of Chinese Academy of Sciences, Beijing 100049, China, [4]Department of Physics, Shanghai University, Shanghai 200444, China
相关基金：Project supported by the National Basic Research Program of China （Grant No. 2011CB808101）, the Funds from the Chinese Academy of Sciences, and the National Natural Science Foundation of China （Grant Nos. 1112790, 10734080, 61221064, 60908008, and 61078037）.

作者：陆俊[1,2,3], 黄志远[2,4], 王丁[2], 许毅[2], 刘彦祺[2], 郭晓杨[2], 黎文开[2], 吴分翔[2], 刘征征[2], 冷雨欣[2]

关键词：非线性效应, 啁啾脉冲, 空心光纤, 放大器, 压缩, 皮秒, 最佳光纤长度, 气体压力, picosecond pulse, hollow-core fiber, thin-disk amplifier, spectrum broadening

中文摘要：

We theoretically study the nonlinear compression of a 20-m J, 1030-nm picosecond chirped pulse from the thin-disk amplifier in a krypton gas-filled hollow-core fiber. The chirp from the thin-disk amplifier system has little influence on the initial pulse, however, it shows an effect on the nonlinear compression in hollow-core fiber. We use a large diameter hollow waveguide to restrict undesirable nonlinear effects such as ionization; on the other hand, we employ suitable gas pressure and fiber length to promise enough spectral broadening; with 600-μm, 6-bar(1 bar = 105Pa), 1.8-m hollow fiber,we obtain 31.5-fs pulse. Moreover, we calculate and discuss the optimal fiber lengths and gas pressures with different initial durations induced by different grating compression angles for reaching a given bandwidth. These results are meaningful for a compression scheme from picoseconds to femtoseconds.

英文摘要：

We theoretically study the nonlinear compression of a 20-rnJ, 1030-nm picosecond chirped pulse from the thin-disk amplifier in a krypton gas-filled hollow-core fiber. The chirp from the thin-disk amplifier system has little influence on the initial pulse, however, it shows an effect on the nonlinear compression in hollow-core fiber. We use a large diameter hollow waveguide to restrict undesirable nonlinear effects such as ionization; on the other hand, we employ suitable gas pressure and fiber length to promise enough spectral broadening; with 600-μm, 6-bar （1 bar = 105 Pa）, 1.8-m hollow fiber, we obtain 31.5-fs pulse. Moreover, we calculate and discuss the optimal fiber lengths and gas pressures with different initial durations induced by different grating compression angles for reaching a given bandwidth. These results are meaningful for a compression scheme from picoseconds to femtoseconds.