Femtosecond time-resolved spectroscopic study of the slow dynamics in the structural phase transition

Toshirou Yagi, June Kano, Takeo Watanuki, Yuhji Tsujimi, Keith A. Nelson

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The femtosecond time-resolved spectroscopy has been applied for the study of the B2 soft mode in the phase transition of the hydrogen-bonded ferroelectric KDP. An extremely early stage of the excitation of the B2 soft mode in KDP reveals newly existence of the mechanical forming process of the soft modes over the limit of the Debye model. The method shows its high resolution on the wave vector in the study of the A1 phonon-polariton dispersion relation of LiNbO3.

Original languageEnglish
Pages (from-to)S1012-S1016
JournalJournal of the Korean Physical Society
Volume42
Issue numberSUPPL.
Publication statusPublished - Apr 1 2003
Externally publishedYes

Keywords

  • Dispersion relation
  • Heterodyne detection
  • Impulsive stimulated Raman scattering
  • Initial process
  • KDP
  • LN
  • Phonon-polariton
  • Soft mode

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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