The extremely early stage of the ferroelectric B 2 soft mode of KDP studied by the impulsive stimulated Raman scattering

Jun Kano, Yuhji Tsujimi, Keith A. Nelson, Toshirou Yagi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

It has been reported that the ferroelectric B 2 soft mode of KDP in time-domain was observed directly by the impulsive stimulated Raman scattering with a heterodyne detection method (HD-ISRS). With 80 femtosecond laser pulses, the initial process in the extremely early stage of the B 2 mode excitation observed for the first time in time-domain. The signals are analyzed using the modified Debye model (MDM) which gives phenomenologically the initial process of the Debye model. MDM produces a poor fit to the initial process of the B 2 mode in contrast to the good fit to its relaxation process. This indicates that a new model to describe a whole time dependence of the B 2 mode is needed.

Original languageEnglish
Title of host publicationFerroelectrics
Pages59-66
Number of pages8
Volume285
DOIs
Publication statusPublished - Jun 1 2003
Externally publishedYes

Fingerprint

Stimulated Raman scattering
Ferroelectric materials
Raman spectra
Relaxation processes
Ultrashort pulses
time dependence
pulses
excitation
lasers

Keywords

  • Debye model
  • Heterodyne detection
  • Impulsive stimulated Raman scattering
  • Initial process
  • KDP
  • Phase transition
  • Soft mode

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

The extremely early stage of the ferroelectric B 2 soft mode of KDP studied by the impulsive stimulated Raman scattering. / Kano, Jun; Tsujimi, Yuhji; Nelson, Keith A.; Yagi, Toshirou.

Ferroelectrics. Vol. 285 2003. p. 59-66.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kano, Jun ; Tsujimi, Yuhji ; Nelson, Keith A. ; Yagi, Toshirou. / The extremely early stage of the ferroelectric B 2 soft mode of KDP studied by the impulsive stimulated Raman scattering. Ferroelectrics. Vol. 285 2003. pp. 59-66
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