Use of photoelectron laser phase determination method for attosecond measurements with quantum-mechanical calculations

doi:10.1088/1674-1056/17/6/022

中国物理B ›› 2008, Vol. 17 ›› Issue (6): 2072-2077.doi: 10.1088/1674-1056/17/6/022

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Use of photoelectron laser phase determination method for attosecond measurements with quantum-mechanical calculations

葛愉成

Department of Technical Physics and DOE Key Laboratory of Heavy Ion Physics, Peking University, Beijing 100871, China

收稿日期:2007-08-02 修回日期:2007-10-08 出版日期:2008-06-20 发布日期:2008-06-20

Use of photoelectron laser phase determination method for attosecond measurements with quantum-mechanical calculations

Ge Yu-Cheng(葛愉成)^†

Department of Technical Physics and DOE Key Laboratory of Heavy Ion Physics, Peking University, Beijing 100871, China

Received:2007-08-02 Revised:2007-10-08 Online:2008-06-20 Published:2008-06-20

摘要/Abstract

摘要： This paper calculates quantum-mechanically the photoelectron energy spectra excited by attosecond x-rays in the presence of a few-cycle laser. A photoelectron laser phase determination method is used for precise measurements of the pulse natural properties of x-ray intensity and the instantaneous frequency profiles. As a direct procedure without any previous pulse profile assumptions and time-resolved measurements as well as data fitting analysis, this method can be used to improve the time resolutions of attosecond timing and measurements with metrological precision. The measurement range is half of a laser optical cycle.

Abstract: This paper calculates quantum-mechanically the photoelectron energy spectra excited by attosecond x-rays in the presence of a few-cycle laser. A photoelectron laser phase determination method is used for precise measurements of the pulse natural properties of x-ray intensity and the instantaneous frequency profiles. As a direct procedure without any previous pulse profile assumptions and time-resolved measurements as well as data fitting analysis, this method can be used to improve the time resolutions of attosecond timing and measurements with metrological precision. The measurement range is half of a laser optical cycle.

Key words: attosecond measurement, photoelectron spectrum, laser phase determination, transfer equation

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

32.80.Fb

32.30.Rj (X-ray spectra) 42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)

葛愉成. Use of photoelectron laser phase determination method for attosecond measurements with quantum-mechanical calculations[J]. 中国物理B, 2008, 17(6): 2072-2077.

Ge Yu-Cheng(葛愉成). Use of photoelectron laser phase determination method for attosecond measurements with quantum-mechanical calculations[J]. Chin. Phys. B, 2008, 17(6): 2072-2077.

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Use of photoelectron laser phase determination method for attosecond measurements with quantum-mechanical calculations

Use of photoelectron laser phase determination method for attosecond measurements with quantum-mechanical calculations

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