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Low-order above-threshold ionization in intense few-cycle laser pulses

Journal Article · · Physical Review. A
;  [1]
  1. Department of Physics, University of Durham, Durham DH1 3LE (United Kingdom)
The low-energy end of the spectrum of photoelectrons detached from hydrogenic ions exposed to an intense low-frequency few-cycle pulse is calculated within the strong-field approximation (SFA). The effect on the detached photoelectron of the Coulomb field of the nucleus is taken into account quasiclassically. The results are compared with those of an ab initio solution of the time-dependent Schroedinger equation, for the case of an He{sup +} ion irradiated by a 400-nm pulse of 1x10{sup 16} W cm{sup -2} peak intensity. Many of the features of the ab initio spectra can be understood within the SFA.
OSTI ID:
20650029
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English