中国物理B ›› 2006, Vol. 15 ›› Issue (12): 2909-2919.doi: 10.1088/1009-1963/15/12/025

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Laser-phase determination methods and transfer equations for direct temporal structure measure- ments of atto- and femtosecond XUV pulses

葛愉成   

  1. Department of Technical Physics, Peking University, Beijing 100871, China
  • 收稿日期:2005-05-30 修回日期:2006-05-31 出版日期:2006-12-20 发布日期:2006-12-20

Laser-phase determination methods and transfer equations for direct temporal structure measure- ments of atto- and femtosecond XUV pulses

Ge Yu-Cheng(葛愉成)†   

  1. Department of Technical Physics, Peking University, Beijing 100871, China
  • Received:2005-05-30 Revised:2006-05-31 Online:2006-12-20 Published:2006-12-20

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摘要： In this paper the laser-phase determination methods and transfer equations are presented to directly reconstruct the detailed temporal structures of ultra-short extreme ultraviolet (xuv) pulses from the measured photoelectron energy spectra (PES). Each transfer equation includes one of PID (proportional-integral-differential) terms of PES. The intensity and instantaneous frequency of attosecond xuv can be retrieved from the integral term of PES. The intensity profiles of narrow bandwidth atto- and femtosecond xuvs can be rebuilt from the proportional and differential terms of PES respectively. The methods and equations may be used to improve time resolutions in measuring ultrashort pulses.

Abstract: In this paper the laser-phase determination methods and transfer equations are presented to directly reconstruct the detailed temporal structures of ultra-short extreme ultraviolet (xuv) pulses from the measured photoelectron energy spectra (PES). Each transfer equation includes one of PID (proportional-integral-differential) terms of PES. The intensity and instantaneous frequency of attosecond xuv can be retrieved from the integral term of PES. The intensity profiles of narrow bandwidth atto- and femtosecond xuvs can be rebuilt from the proportional and differential terms of PES respectively. The methods and equations may be used to improve time resolutions in measuring ultrashort pulses.

Key words: laser-phase determination, transfer equation, temporal structure, photoelectron spectrum

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

  • 32.80.Fb
31.15.-p (Calculations and mathematical techniques in atomic and molecular physics) 32.10.Hq (Ionization potentials, electron affinities) 32.70.Jz (Line shapes, widths, and shifts)