SUBPICOSECOND TIME-RESOLVED RAMAN INVESTIGATION OF OPTICAL PHONON MODES IN CR-DOPED FORSTERITE

被引：11

作者：

DEMOS, SG ^{[1
]}

ALFANO, RR ^{[1
]}

机构：

[1] CUNY,GRAD SCH,NEW YORK,NY 10031

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.52.987

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：987 / 996

页数：10

共 27 条

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