Accurate retrieval of target structures and laser parameters of few-cycle pulses from photoelectron momentum spectra

We illustrate a new method of analyzing three-dimensional momentum images of high-energy photoelectrons generated by intense phase-stabilized few-cycle laser pulses. Using photoelectron momentum spectra that were obtained by velocity-map imaging of above-threshold ionization of xenon and argon targe...

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Bibliographic Details
Published in:Physical review letters 2009-02, Vol.102 (7), p.073001-073001, Article 073001
Main Authors: Micheau, S, Chen, Zhangjin, Le, A T, Rauschenberger, J, Kling, M F, Lin, C D
Format: Article
Language:English
Subjects:
ARGON
ATOMIC AND MOLECULAR PHYSICS
DIFFERENTIAL CROSS SECTIONS
ELECTRON SPECTRA
ELECTRONS
IONIZATION
IONS
LASERS
PHOTOELECTRON SPECTROSCOPY
PULSES
THREE-DIMENSIONAL CALCULATIONS
XENON
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Summary:We illustrate a new method of analyzing three-dimensional momentum images of high-energy photoelectrons generated by intense phase-stabilized few-cycle laser pulses. Using photoelectron momentum spectra that were obtained by velocity-map imaging of above-threshold ionization of xenon and argon targets, we show that the absolute carrier-envelope phase, the laser peak intensity, and pulse duration can be accurately determined simultaneously (with an error of a few percent). We also show that the target structure, in the form of electron-target ion elastic differential cross sections, can be retrieved over a range of energies. The latter offers the promise of using laser-generated electron spectra for probing dynamic changes in molecular targets with subfemtosecond resolution.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.102.073001