Abstract
The carrier intraband relaxation in CdS is studied with femtosecond time resolution using the luminescence up-conversion technique. The cooling dynamics of high-density carriers clearly show the nonequilibrium build-up of high populations of certain modes for both longitudinal optical and acoustic phonons. The acoustic-mode disturbances develop on the subpicosecond time scale and are observed as a transient reduction of the carrier energy-loss rate through the retardation of the optical-phonon decay (the effect of the ''acoustic-phonon bottleneck'').
Original language | English |
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Pages (from-to) | 4728-4731 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 52 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1995 |
ASJC Scopus subject areas
- Condensed Matter Physics