Two-color Transient Grating Spectroscopy of a Two-level System

Kyungwon Kwak, Minhaeng Cho, Graham R. Fleming, Ritesh Agarwal, Bradley S. Prall

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A theoretical description and experimental demonstration of homodyne-detected two-color transient grating (2-C TG) signal are presented. By treating, the coupled bath degrees of freedom as a collection of harmonic oscillators and using a short-time expansion method, approximated nonlinear response functions were obtained. An analytic expression for the two-color transient grating signal was obtained by carrying out relevant Gaussian integrals. The initial rising and decaying parts of the 2-C TG signal is shown to be critically dependent on the ultrafast inertial component of the solvation correlation function. The experimental results confirm the predictions of the theoretical model.

Original languageEnglish
Pages (from-to)1069-1074
Number of pages6
JournalBulletin of the Korean Chemical Society
Issue number8
Publication statusPublished - 2003 Aug 20


  • Solvation
  • Spectroscopy
  • Transient grating

ASJC Scopus subject areas

  • General Chemistry


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