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 language | English (US) |
|---|---|
| Pages (from-to) | 987-996 |
| Number of pages | 10 |
| Journal | Physical Review B |
| Volume | 52 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1995 |
| Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics
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Demos, S. G., & Alfano, R. R. (1995). Subpicosecond time-resolved Raman investigation of optical phonon modes in Cr-doped forsterite. Physical Review B, 52(2), 987-996. https://doi.org/10.1103/PhysRevB.52.987