Optical-heterodyne-detected induced phase modulation for the study of femtosecond molecular dynamics

Toshiaki Hattori, Akira Terasaki, Takayoshi Kobayashi, Tatsuo Wada, Akira Yamada, Hiroyuki Sasabe

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

A new experimental technique for the study of ultrafast optical response of nonlinear materials, which detects nonrelaxational response in the media with high sensitivity, is introduced. Polarization-selective optical-heterodyne- detection scheme is applied to the measurement of the spectral shift of a probe pulse which is caused by induced phase modulation (IPM) brought about by a pump pulse. This technique, being sensitive to the high-frequency component of the nonlinear response, is especially applicable to the study of intermolecular dynamics in disordered media. The temporal responses of the optical Kerr effect in liquid carbon tetrachloride, benzene, and carbon disulfide are studied using this technique with femtosecond optical pulses. In the response of benzene, damped oscillations are clearly observed which are due to intermolecular vibrational motions of the molecules. The data obtained from benzene and carbon disulfide are analyzed using a Fourier-transform method. The response functions for the IPM measurements are reconstructed, and the Fourier spectra are also obtained. They are discussed in terms of inertial molecular motions and the local structures in these liquids.

Original languageEnglish
Pages (from-to)937-945
Number of pages9
JournalThe Journal of Chemical Physics
Volume95
Issue number2
DOIs
Publication statusPublished - Jan 1 1991
Externally publishedYes

Fingerprint

Phase modulation
Benzene
phase modulation
Carbon Disulfide
Molecular dynamics
molecular dynamics
disulfides
Optical Kerr effect
carbon disulfide
Carbon Tetrachloride
benzene
Liquids
Laser pulses
Fourier transforms
pulses
Pumps
Polarization
Molecules
carbon tetrachloride
liquids

All Science Journal Classification (ASJC) codes

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

Cite this

Optical-heterodyne-detected induced phase modulation for the study of femtosecond molecular dynamics. / Hattori, Toshiaki; Terasaki, Akira; Kobayashi, Takayoshi; Wada, Tatsuo; Yamada, Akira; Sasabe, Hiroyuki.

In: The Journal of Chemical Physics, Vol. 95, No. 2, 01.01.1991, p. 937-945.

Research output: Contribution to journalArticle

Hattori, Toshiaki ; Terasaki, Akira ; Kobayashi, Takayoshi ; Wada, Tatsuo ; Yamada, Akira ; Sasabe, Hiroyuki. / Optical-heterodyne-detected induced phase modulation for the study of femtosecond molecular dynamics. In: The Journal of Chemical Physics. 1991 ; Vol. 95, No. 2. pp. 937-945.
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