Dynamics of local modes during nonradiative relaxation

Dana M. Calistru; S. G. Demos; R. R. Alfano

Dynamics of local modes during nonradiative relaxation

Dana M. Calistru, S. G. Demos, R. R. Alfano

Research output: Contribution to journal › Article

Abstract

The direct participation of local modes in nonradiative processes taking place in impurity-doped laser crystals is investigated using time resolved resonance Raman scattering. The measured dynamics of the highest energy Cr⁴⁺ local mode in Cr:Mg₂SiO₄ shows that nonradiative relaxation proceeds via transfer of the nonequilibrium local mode population generated during the transition through an electronic bottleneck, to a select number of daughter phonons, and not directly, to the phonon continuum.

Original language	English (US)
Pages (from-to)	374-377
Number of pages	4
Journal	Physical Review Letters
Volume	78
Issue number	2
State	Published - 1997
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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Calistru, D. M., Demos, S. G., & Alfano, R. R. (1997). Dynamics of local modes during nonradiative relaxation. Physical Review Letters, 78(2), 374-377.

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abstract = "The direct participation of local modes in nonradiative processes taking place in impurity-doped laser crystals is investigated using time resolved resonance Raman scattering. The measured dynamics of the highest energy Cr4+ local mode in Cr:Mg2SiO4 shows that nonradiative relaxation proceeds via transfer of the nonequilibrium local mode population generated during the transition through an electronic bottleneck, to a select number of daughter phonons, and not directly, to the phonon continuum.",

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year = "1997",

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AU - Calistru, Dana M.

AU - Demos, S. G.

AU - Alfano, R. R.

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N2 - The direct participation of local modes in nonradiative processes taking place in impurity-doped laser crystals is investigated using time resolved resonance Raman scattering. The measured dynamics of the highest energy Cr4+ local mode in Cr:Mg2SiO4 shows that nonradiative relaxation proceeds via transfer of the nonequilibrium local mode population generated during the transition through an electronic bottleneck, to a select number of daughter phonons, and not directly, to the phonon continuum.

AB - The direct participation of local modes in nonradiative processes taking place in impurity-doped laser crystals is investigated using time resolved resonance Raman scattering. The measured dynamics of the highest energy Cr4+ local mode in Cr:Mg2SiO4 shows that nonradiative relaxation proceeds via transfer of the nonequilibrium local mode population generated during the transition through an electronic bottleneck, to a select number of daughter phonons, and not directly, to the phonon continuum.

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