Spectrally-resolved transient grating signals from β-carotene in benzene solution

Mitsuru Sugisaki, Masazumi Fujiwara, Selvakumar V. Nair, Harry E. Ruda, Richard J. Cogdell, Hideki Hashimoto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The vibronic coherence of β-carotene in benzene has been investigated by means of transient grating spectroscopy using sub 20-fs optical pulses. The coherent oscillations with a period of a few tens of femtoseconds have been clearly observed, which reflect the C-C and C=C stretching modes and the C-CH3 rocking mode of the polyene backbone. We found that the signal is very sensitive to the excitation wavelength. Calculations based on a Brownian oscillator model were performed. We show that the experimental results are well explained by properly considering the excitation pulse shapes.

Original languageEnglish
Pages (from-to)S34-S37
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Issue numberSUPPL. 1
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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