Attosecond pulse generation from two-electron harmonic emission spectrum

In this paper, we theoretically investigate the high-order harmonic generation and attosecond pulse generation when a two-electron He atom is exposed to the intense laser pulse. It shows that due to the two-electron double recombination mechanism, an extended plateau beyond the classical single-elec...

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Published in:Chinese physics B 2015-03, Vol.24 (3), p.189-193
Main Author: 冯立强 刘航
Format: Article
Language:English
Subjects:
Attosecond pulses
Emission
Exposure
Extreme values
Harmonic generations
Harmonics
Lasers
Ultraviolet
单电子
发射光谱
强激光脉冲
扩展方案
脉冲生成
重组机制
阿秒脉冲
高次谐波
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description In this paper, we theoretically investigate the high-order harmonic generation and attosecond pulse generation when a two-electron He atom is exposed to the intense laser pulse. It shows that due to the two-electron double recombination mechanism, an extended plateau beyond the classical single-electron harmonic has been obtained on the two-electron harmonic spectrum. Further by using this two-electron harmonic extension scheme combined with the two-color field, two supercontinuum bandwidths with 200 e V have been obtained. As a result, a series of sub-60 as extreme ultraviolet（XUV）pulses have been directly generated.
doi_str_mv 10.1088/1674-1056/24/3/034206
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subjects Attosecond pulses
Emission
Exposure
Extreme values
Harmonic generations
Harmonics
Lasers
Ultraviolet
单电子
发射光谱
强激光脉冲
扩展方案
脉冲生成
重组机制
阿秒脉冲
高次谐波
title Attosecond pulse generation from two-electron harmonic emission spectrum
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