Development of nonresonant optimal control simulation to include polarization effects of laser pulses

Hiroya Abe, Yukiyoshi Ohtsuki

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We extend our previous optimal control simulation to explicitly include the polarization effects of a laser pulse. The simulation is applied to a rigid rotor model of a nitrogen molecule with two illustrative objectives to evaluate its numerical performance and examine the role of optimal time-dependent polarization vectors. The first example aims at aligning a molecule along the space-fixed z-axis that is perpendicular to the polarization vectors on the xy-plane, which leads to a circularly polarized pulse as an optimal solution. The second objective is to create a rotational wave packet that aligns two directions specified by y = ±x simultaneously. The optimal polarization direction changes with time from y = +x to y = -x, alternately. These examples illustrate the importance of examining an optimal pulse as a vector wave, and the present simulation provides a useful means to explore the best (time-dependent) polarization conditions of a laser pulse.

Original languageEnglish
Pages (from-to)13-18
Number of pages6
JournalChemical Physics
Volume400
DOIs
Publication statusPublished - 2012 May 25

Keywords

  • Algorithm
  • Circular polarization
  • Laser pulse
  • Molecular alignment
  • Optimal control
  • Polarization
  • Pulse design
  • Rotational wave packet
  • Vector wave

ASJC Scopus subject areas

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

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