Isolated attosecond pulse generation by direct optimization of two-color laser fields using the genetic algorithm

被引：0

作者：

Ishikawa, Kenichi L. ^{[1
]}

Fang, Shaobo ^{[2
]}

Tanigawa, Takashi ^{[3
]}

Karasawa, Naoki ^{[4
]}

Yamashita, Mikio ^{[3
]}

机构：

[1] Photon Science Center, Graduate School of Engineering, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

[2] Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany

[3] Department of Applied Physics, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan

[4] Department of Opt-Electronic System Engineering, Chitose Institute of Science and Technology, 758-65, Bibi, Chitose, Hokkaido 066-8655, Japan

来源：

IEEJ Transactions on Electronics, Information and Systems | 2012年 / 132卷 / 08期

关键词：

Group delay - Dispersions - Harmonic generation;

D O I：

10.1541/ieejeiss.132.1278

中图分类号：

学科分类号：

摘要：

We propose a method to optimize two-color laser fields, composed of an intense driving pulse at 580 nm and a weaker control pulse at 1160 nm, for isolated attosecond pulse generation. We use genetic algorithm (GA) to optimize laser parameters including the group-delay dispersion and the third-order dispersion of the control pulse. The fitness function is constructed by directly using the duration of the generated high-harmonic extreme ultraviolet (XUV) pulse. Our simulation results show that the isolated attosecond pulse can be significantly shortened without much affecting its spectral width. © 2012 The Institute of Electrical Engineers of Japan.

引用

页码：1278 / 1282

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