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Two-colour multiphoton ionization of hydrogen by an intense laser field and one of its harmonics

1992; IOP Publishing; Volume: 25; Issue: 11 Linguagem: Inglês

10.1088/0953-4075/25/11/007

1361-6455

R. M. Potvliege, Philip H. G. Smith,

Quantum Mechanics and Applications

New results of ab initio Floquet calculations of rates for multiphoton ionization of atomic hydrogen by a coherent superposition of an intense laser field and one of its harmonics (second, third, fifth or seventh) are presented. The authors discuss further the relationship of these processes with two-colour ionization by fields with incommensurable frequencies, as well as the range of validity of Perelomov and Popov's formula (1967).