Generation of high-order harmonic continuum with two-hump-structure infrared laser pulse

Generation of high-order harmonic continuum with two-hump-structure infrared laser pulse

We experimentally investigate the high-order harmonic generation in argon gas cell driven by a multi-cycle broadband infrared laser pulse from a tunable optical-parametric-amplifier （OPA） source. The generation of high-order harmonic continuum with the cut-off photon energy up to 110 eV is observed...

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Bibliographic Details
Published in:Chinese optics letters Vol. 12; no. 3; pp. 1 - 4
Main Author: 刘灿东 尉鹏飞 苗境 张春梅 黄延穗 郑颖辉 冷雨欣 曾志男
Format: Journal Article
Language:English
Published: 2014
Subjects:
OPA
光参量放大器
光子能量
红外激光脉冲
结构
脉冲驱动
驼峰
高次谐波产生
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Summary:We experimentally investigate the high-order harmonic generation in argon gas cell driven by a multi-cycle broadband infrared laser pulse from a tunable optical-parametric-amplifier （OPA） source. The generation of high-order harmonic continuum with the cut-off photon energy up to 110 eV is observed by tuning the chirp of the 800-nm laser pulse which pumps OPA source. The generation of harmonic continuum is understood in terms of the two-hump structure of the OPA output spectrum and the optimal relative phase of the two humps. The demonstrated scheme is of importance for the generation of extreme ultraviolet （XUV） continuum at higher photon energy region.
Bibliography:31-1890/O3
We experimentally investigate the high-order harmonic generation in argon gas cell driven by a multi-cycle broadband infrared laser pulse from a tunable optical-parametric-amplifier （OPA） source. The generation of high-order harmonic continuum with the cut-off photon energy up to 110 eV is observed by tuning the chirp of the 800-nm laser pulse which pumps OPA source. The generation of harmonic continuum is understood in terms of the two-hump structure of the OPA output spectrum and the optimal relative phase of the two humps. The demonstrated scheme is of importance for the generation of extreme ultraviolet （XUV） continuum at higher photon energy region.
Candong Liu , Pengfei Wei , Jing Miao , Chunmei Zhang , Yansui Huang , Yinghui Zheng , Yuxin Leng , Zhinan Zeng （1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences, Shanghai 201800, China 2 College of Physics and Electronic Information Engineering, Wenzhou University, Wenzhou 325035, China ）
ISSN:1671-7694
DOI:10.3788/COL201412.030201