Femtosecond time-resolved resonance Raman gain spectroscopy in polydiacetylene

Masayuki Yoshizawa, Yasuhiro Hattori, Takayoshi Kobayashi

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)


Geometrical relaxation of the main chain configuration in polydiacetylene (PDA) has been investigated with time-resolved resonance Raman gain spectroscopy with 300-fs resolution. The Raman signal due to a self-trapped exciton in PDA has been observed at 1200 cm-1. The observed Raman signals offer direct evidence of the structure of a self-trapped exciton being a butatrienelike structure after geometrical relaxation from the acetylenelike structure in the free exciton state.

Original languageEnglish
Pages (from-to)13259-13262
Number of pages4
JournalPhysical Review B
Issue number18
Publication statusPublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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