Dynamical medium depletion in high-order above-threshold ionization with few-cycle laser pulses

Journal Article · Wed Dec 01 04:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.065402· OSTI ID:20650016

Altucci, C; Velotta, R ^[1]; Tosa, V ^[2]; Nam, C H ^[2]

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1. INFM-Coherentia and Dipartimento di Scienze Fisiche, Universita di Napoli 'Federico II', Complesso di Monte Sant'Angelo, Via Cintia- 80134, Naples (Italy)
2. Department of Physics, KAIST, Daejeon 305-701 (Korea, Republic of)

The influence of dynamical medium depletion in high-order above-threshold ionization (ATI) in left/right asymmetry of photoelectron energy spectra is analyzed. Based on a classical analysis of high-order ATI electrons produced by few-cycle laser pulses, calculated asymmetry maps of electron spectra reproduce very well the experimental results reported in Lindner et al. [Phys. Rev. Lett. 92, 113001 (2004)], utilized for determining the Guoy phase shift of few-cycle laser pulses. The anomalous behavior of the high-energy part of the ATI electron spectra is, then, fully understood in terms of earlier medium depletion occurring in the leading edge of the laser pulse. In order to correctly reproduce the experimental findings a physical temporal envelope of the laser pulse, which only vanishes at the infinity, plays a crucial role.

• OSTI ID: 20650016
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ASYMMETRY
ELECTRON SPECTRA
ELECTRONS
ENERGY SPECTRA
LASER RADIATION
PHASE SHIFT
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PULSES
RARE GASES