Hot-phonon effects in femtosecond luminescence spectra of electron-hole plasmas in CdS

Victor I Klimov, P. Haring Bolivar, H. Kurz

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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 languageEnglish
Pages (from-to)4728-4731
Number of pages4
JournalPhysical Review B
Issue number7
Publication statusPublished - 1995


ASJC Scopus subject areas

  • Condensed Matter Physics

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