Control of quantum dynamics by a locally optimized laser field. Multi-photon dissociation of hydrogen fluoride

M. Sugawara, Y. Fujimura

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We present a theoretical method for laser-control of a quantum system with open channels. The framework is based on the local optimization theory proposed in a previous paper (J. Chem. Phys. 100 (1994) 5646). The optimization theory is extended by introducing an optimization parameter q(ε{lunate}) relevant to a continuum channel with kinetic energy ε{lunate}. As an example of application, the control theory is used in multi-photon dissociation of hydrogen fluoride in the ground electronic state. The optimized laser field is analyzed with the help of a window Fourier transform and is shown to approximate a sequence of linear chirped pulses with different chirping rates. Such a form of the optimized laser field originates from the breakdown of the selection rule for optical transition in a Morse oscillator model. The time variation of multi-photon processes in the presence of the optimized laser field and a dissociation fraction are calculated based on the nuclear wave packet theory.

Original languageEnglish
Pages (from-to)113-124
Number of pages12
JournalChemical Physics
Volume196
Issue number1-2
DOIs
Publication statusPublished - 1995 Jun 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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