Nonradiative energy transfer from the impurity ion into the host lattice for Cr4+-doped forsterite laser crystal

V. A. Kremerman, M. Lax, S. G. Demos, Dana M. Calistru, R. R. Alfano

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A theoretical model explaining the nonradiative energy transfer from a photoexcited impurity ion into the lattice in a laser crystal is presented. The energy-transfer mechanism consists of electronic energy transfer to local vibrations that then dissipate their energy to lattice (phonon) modes of the same energy creating a nonequilibrium phonon population. The model explains the experimental temporal profiles of nonequilibrium optical phonons probed by time-resolved Raman scattering in Cr-doped forsterite laser crystal. The electronic transition time and relaxation lifetimes for phonon and for local modes are ∼3, 4, and 8 ps, respectively.

Original languageEnglish (US)
Pages (from-to)14391-14398
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number22
StatePublished - Dec 1 1997
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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