Time-energy properties of an attosecond extreme ultra-violet pulse

doi:10.1088/1674-1056/19/10/103302

中国物理B ›› 2010, Vol. 19 ›› Issue (10): 103302-103302.doi: 10.1088/1674-1056/19/10/103302

Time-energy properties of an attosecond extreme ultra-violet pulse

葛愉成, 何海萍

School of Physics and Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

收稿日期:2010-04-29 修回日期:2010-07-13 出版日期:2010-10-15 发布日期:2010-10-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10827505 and 10675014).

Time-energy properties of an attosecond extreme ultra-violet pulse

Ge Yu-Cheng(葛愉成)^†ger and He Hai-Ping(何海萍)

School of Physics and Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

Received:2010-04-29 Revised:2010-07-13 Online:2010-10-15 Published:2010-10-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10827505 and 10675014).

摘要/Abstract

摘要： The time-energy properties of high-order harmonic generation (HHG) are calculated for a linearly polarized 7-fs laser pulse with different carrier-envelope phases (CEPs). The quantum trajectory paths that contribute to an as (1 as=10^-18 s) pulse in HHG are identified. The laser-duration dependence and the CEP dependence of HHG energy property are investigated. The study shows that an as extreme ultra-violet (XUV) pulse can be selected from HHG spectrum near cut-off energy with a bandpass optical filter. The theoretical prediction of the pulse duration is proportional to bandwidth. Analysis suggests that a measured narrowband as XUV pulse may consist of instantaneous shorter pulses each dependent on laser pulse duration, intensity, and CEP. These information can be used as references for producing, selecting, improving and manipulating (timing) as pulses.

Abstract: The time-energy properties of high-order harmonic generation (HHG) are calculated for a linearly polarized 7-fs laser pulse with different carrier-envelope phases (CEPs). The quantum trajectory paths that contribute to an as (1 as=10^-18 s) pulse in HHG are identified. The laser-duration dependence and the CEP dependence of HHG energy property are investigated. The study shows that an as extreme ultra-violet (XUV) pulse can be selected from HHG spectrum near cut-off energy with a bandpass optical filter. The theoretical prediction of the pulse duration is proportional to bandwidth. Analysis suggests that a measured narrowband as XUV pulse may consist of instantaneous shorter pulses each dependent on laser pulse duration, intensity, and CEP. These information can be used as references for producing, selecting, improving and manipulating (timing) as pulses.

Key words: high harmonic generation, energy properties, attosecond pulse, carrier envelope phase

中图分类号: (Photoionization of atoms and ions)

32.80.Fb

42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)

葛愉成, 何海萍. Time-energy properties of an attosecond extreme ultra-violet pulse[J]. 中国物理B, 2010, 19(10): 103302-103302.

Ge Yu-Cheng(葛愉成) and He Hai-Ping(何海萍). Time-energy properties of an attosecond extreme ultra-violet pulse[J]. Chin. Phys. B, 2010, 19(10): 103302-103302.

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Time-energy properties of an attosecond extreme ultra-violet pulse

Time-energy properties of an attosecond extreme ultra-violet pulse

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