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 Scopus citations

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

ASJC Scopus subject areas

  • Condensed Matter Physics

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