Laser-Stimulated Vibrational Excitation of an Adspecies Studied by a Generalized Master Equation: Neutral Atomic Hydrogen on Hydrated KCl(001).

Abstract

Vibrational energy transfer between an IR laser, a solid surface and an adatom is studied by a generalized master equation which includes memory effects. Numerical problems associated with the temporally delocalized memory kernel are overcome by introducing the isomnesic approximation. Results obtained for time scales ranging from 2 ps to 2 micro s for H(H2O)/KC1(001) show that effective vibrational excitation is possible with low power lasers (1 W/sq cm) in spite of fast phonon relaxation. Detailed time-evolution of the system is seen to differ radically from that predicted by Markovian theories, even for fairly long time scales. Keywords include: vibrational excitation, laser-stimulated, adspecies, generalized master equation, quantum treatment, H(h2O)/KC1(001) system.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1985
Accession Number
ADA153665

Entities

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  • A. C. Beri
  • Thomas F. George

Organizations

  • University of Rochester

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  • Energy and Power Technologies

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  • Computational Modeling and Simulation
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  • Directed Energy
  • Directed Energy - Lasers
  • Quantum Computing