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 |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Subpicosecond time-resolved Raman investigation of optical phonon modes in Cr-doped forsterite. / Demos, S. G.; Alfano, R. R.
In: Physical Review B, Vol. 52, No. 2, 1995, p. 987-996.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Subpicosecond time-resolved Raman investigation of optical phonon modes in Cr-doped forsterite
AU - Demos, S. G.
AU - Alfano, R. R.
PY - 1995
Y1 - 1995
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0343095682&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0343095682&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.52.987
DO - 10.1103/PhysRevB.52.987
M3 - Article
AN - SCOPUS:0343095682
VL - 52
SP - 987
EP - 996
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 2
ER -