Laser-induced substructures in above-threshold-ionization spectra from intense few-cycle laser pulses
- J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506-2604 (United States)
We have calculated above-threshold-ionization (ATI) spectra for argon in a strong, few-cycle 400 nm laser pulse with an ab initio solution of the time-dependent Schroedinger equation and by using a model based on the strong field approximation. We find additional peaks in the resulting ATI spectra which are not present for longer pulses. This substructure is due to the rapidly changing ponderomotive potential in the short laser pulse. It is sensitive to the pulse duration and the pulse envelope and is a general feature of ionization spectra originating from a short, intense laser pulse.
- OSTI ID:
- 20786624
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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