Subpicosecond time-resolved Raman investigation of optical phonon modes in Cr-doped forsterite

S. G. Demos, R. R. Alfano

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The nonradiative relaxation dynamics of forsterite was investigated by studying different phonon modes using time-resolved Raman spectroscopy. We found that only the 225, 335, and 370 cm-1 anti-Stokes Raman lines exhibit changes in their intensity at various pump-probe delay times indicating the presence of nonequilibrium phonon populations. The experiments were performed at room and liquid nitrogen temperatures. A rate equations analysis was used to describe the dynamics of the ion-lattice system. The nonradiative relaxation time and the phonon lifetimes were estimated by fitting to the experimental data.

Original languageEnglish (US)
Pages (from-to)987-996
Number of pages10
JournalPhysical Review B
Volume52
Issue number2
DOIs
StatePublished - 1995
Externally publishedYes

Fingerprint

forsterite
Liquid nitrogen
liquid nitrogen
Relaxation time
rooms
Raman spectroscopy
Time delay
time lag
relaxation time
Pumps
Ions
pumps
nitrogen
life (durability)
probes
ions
Experiments
Temperature
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Subpicosecond time-resolved Raman investigation of optical phonon modes in Cr-doped forsterite. / Demos, S. G.; Alfano, R. R.

In: Physical Review B, Vol. 52, No. 2, 1995, p. 987-996.

Research output: Contribution to journalArticle

Demos, S. G. ; Alfano, R. R. / Subpicosecond time-resolved Raman investigation of optical phonon modes in Cr-doped forsterite. In: Physical Review B. 1995 ; Vol. 52, No. 2. pp. 987-996.
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