Harmonic generation in ionizing systems by the complex scaled adiabatic-switch method

Nir Ben-Tal*, Nimrod Moiseyev, Ronnie Kosloff

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

An adiabatic-switch method for calculating harmonic generation under intense laser radiation is presented. The adiabatic switch is first applied to nonbound (i.e., ionizing or dissociative) time-periodic Hamiltonians when the energy spectrum is degenerate. Our derivation is based on the use of Floquet theory combined with complex scaling and of a generalized definition of the inner product for non-Hermitian operators. A model potential representing a Xe atom in the presence of a laser field is studied as an example to illustrate the numerical advantages of the present method and its stability.

Original languageEnglish
Pages (from-to)2437-2442
Number of pages6
JournalPhysical Review A
Volume48
Issue number3
DOIs
StatePublished - 1993
Externally publishedYes

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