Multiphoton ionization of atomic hydrogen in intense subpicosecond laser pulses
- 22 January 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (4) , 404-407
- https://doi.org/10.1103/physrevlett.64.404
Abstract
Multiphoton ionization of atomic hydrogen is investigated experimentally in the short-pulse regime (τ≤0.5 ps) at wavelengths around 600 nm and intensities up to W/. Sharp peaks in the energy spectrum of the photoelectrons can be attributed to resonant ionization processes via excited states which are ac-Stark shifted into resonance. Energies and angular distributions of the electrons allow one to identify some participating excited states with quantum numbers n≥4 and l≥3.
Keywords
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