The response of a hydrogen atom to an intense nonresonant laser field is investigated by direct numerical solution of the time-dependent Schrodinger equation. This calculation is nonperturbative and does not involve the eigenstates of the field-free atom. An ionization rate for three-photon ionization is calculated and found to be in excellent agreement with previous values. The time-dependent electric dipole moment is calculated; its Fourier transform yields the spectrum of scattered light. Odd-order harmonic peaks through at least the 25th order are present in the spectrum.
© 1990 Optical Society of America
Original Manuscript: August 28, 1989
Manuscript Accepted: October 27, 1989
Published: April 1, 1990
Paul L. DeVries, "Calculation of harmonic generation during the multiphoton ionization of the hydrogen atom," J. Opt. Soc. Am. B 7, 517-520 (1990)