Locking a molecular bond: A case study of CsI

Tamás Szakács, Bjarne Amstrup, Peter Gross, Ronnie Kosloff, Herschel Rabitz, András Lörincz

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Abstract

This paper treats the problem of locking a molecular bond at a length other than the equilibrium distance, with the help of optical electric fields. Locking conditions for single-color fields are examined, and slowly decaying locked wave functions are sought. These were functions are then used as target functions in an optimal control procedure. The resultant solution is an optimal field that creates a wave function as close as possible to the target function, followed by the application of a locking single-color field that can keep a large part of this wave function at the given position. An objective of the approach is to eventually extend the optimal control theory to the preparation of molecules in quasistationary nonequilibrium states for further study by spectroscopic or other means. Results are reported for a model of CsI with two potential-energy surfaces, one with a repulsive character.
Original languageEnglish
JournalPhysical Review A
Volume50
Issue number3
Pages (from-to)2540-2547
ISSN2469-9926
DOIs
Publication statusPublished - 1994

Bibliographical note

Copyright (1994) by the American Physical Society.

Keywords

  • LIGHT-PULSES
  • ANALYTICAL SHAPES
  • CHEMICAL-REACTION
  • TEACHING LASERS
  • INFRARED-LASER PULSES
  • SCHRODINGER-EQUATION
  • UNIMOLECULAR REACTIONS
  • SELECTIVE VIBRATIONAL-EXCITATION
  • MODEL SIMULATIONS
  • QUANTUM-SYSTEMS

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