Controls for the generations of high-order harmonics and attosecond pulses by infrared laser field combined with a low-frequency pulse

doi:10.1088/1674-1056/21/8/080202

中国物理B ›› 2012, Vol. 21 ›› Issue (8): 80202-080202.doi: 10.1088/1674-1056/21/8/080202

Controls for the generations of high-order harmonics and attosecond pulses by infrared laser field combined with a low-frequency pulse

贺海翔, 郭雅慧, 何国钟

State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

收稿日期:2011-12-07 修回日期:2012-01-20 出版日期:2012-07-01 发布日期:2012-07-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10974198).

Controls for the generations of high-order harmonics and attosecond pulses by infrared laser field combined with a low-frequency pulse

He Hai-Xiang (贺海翔), Guo Ya-Hui (郭雅慧), He Guo-Zhong (何国钟 )

State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

Received:2011-12-07 Revised:2012-01-20 Online:2012-07-01 Published:2012-07-01
Contact: He Hai-Xiang E-mail:haixianghe@dicp.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10974198).

摘要/Abstract

摘要： We investigate high-order harmonic generations by controlling various quantum paths of harmonics in an infrared laser field which combines a low-frequency pulse. Both classical theory and quantum wavelet transform method are used to understand the physics of harmonics. By adjusting the carrier envelope phase of the fundamental field, the intensities of harmonic spectra increase and the harmonics in the plateau become regular. Attosecond pulses each with a duration of 58 as are obtained directly by compressing the harmonics, and with phase compensation an isolated attosecond pulse less than 30 as can be generated.

关键词: high-order harmonics, isolated attosecond pulse, LZH-DICP code

Abstract: We investigate high-order harmonic generations by controlling various quantum paths of harmonics in an infrared laser field which combines a low-frequency pulse. Both classical theory and quantum wavelet transform method are used to understand the physics of harmonics. By adjusting the carrier envelope phase of the fundamental field, the intensities of harmonic spectra increase and the harmonics in the plateau become regular. Attosecond pulses each with a duration of 58 as are obtained directly by compressing the harmonics, and with phase compensation an isolated attosecond pulse less than 30 as can be generated.

Key words: high-order harmonics, isolated attosecond pulse, LZH-DICP code

中图分类号: (Numerical simulation; solution of equations)

02.60.Cb

42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)

贺海翔, 郭雅慧, 何国钟 . Controls for the generations of high-order harmonics and attosecond pulses by infrared laser field combined with a low-frequency pulse[J]. 中国物理B, 2012, 21(8): 80202-080202.

He Hai-Xiang (贺海翔), Guo Ya-Hui (郭雅慧), He Guo-Zhong (何国钟 ). Controls for the generations of high-order harmonics and attosecond pulses by infrared laser field combined with a low-frequency pulse[J]. Chin. Phys. B, 2012, 21(8): 80202-080202.

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Controls for the generations of high-order harmonics and attosecond pulses by infrared laser field combined with a low-frequency pulse

Controls for the generations of high-order harmonics and attosecond pulses by infrared laser field combined with a low-frequency pulse

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