Pump-probe anharmonic signals in a harmonic system induced by a deformed wavepacket generated by an ultrashort pulse: A theoretical study

T. Taneichi, J. Jánszky, T. Kobayashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The Fourier power spectrum of a transient spectrum, calculated for a model composed of a three-state electronic system coupled to a set of displaced harmonic oscillators, is shown to depend on the pulse duration. The condition under which the wavepacket motion on the harmonic potential substantially deviates from that of the classical mass point is derived. In such an excited state, the Fourier power spectrum has enhanced components with frequencies of harmonics even in a system composed of ideally harmonic potentials. The utility of a Fourier analysis of the spectrum for clarification of the squeezed molecular vibrational state is discussed.

Original languageEnglish
Pages (from-to)540-544
Number of pages5
JournalChemical Physics Letters
Volume419
Issue number4-6
DOIs
Publication statusPublished - Feb 26 2006

Fingerprint

Power spectrum
Ultrashort pulses
Pumps
pumps
harmonics
Fourier analysis
power spectra
probes
Electronic states
pulses
Excited states
vibrational states
harmonic oscillators
pulse duration
electronics
excitation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces
  • Condensed Matter Physics

Cite this

Pump-probe anharmonic signals in a harmonic system induced by a deformed wavepacket generated by an ultrashort pulse : A theoretical study. / Taneichi, T.; Jánszky, J.; Kobayashi, T.

In: Chemical Physics Letters, Vol. 419, No. 4-6, 26.02.2006, p. 540-544.

Research output: Contribution to journalArticle

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