Enhancement of spontaneous emission rates by three-dimensional photon confinement in Bragg microcavities

B. Ohnesorge, M. Bayer, A. Forchel, J. Reithmaier, N. Gippius, S. Tikhodeev

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52 Citations (SciVal)

Abstract

Three-dimensionally confined Bragg microcavities exhibiting several fully quantized photon modes have been investigated by time-resolved photoluminescence spectroscopy. A strong decrease of the exciton lifetime with decreasing lateral dimension is observed and shown to be mainly due to coupling of the long-lived excitons with short-lived photon modes. We observe similar decay times of all photon modes for a fixed structure size which amount to approximately half of the corresponding exciton lifetimes. This behavior is explained by incoherent Auger-type scattering processes populating the photon modes on the low-energy side of the exciton line.

Original languageEnglish
Pages (from-to)R4367-R4370
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume56
Issue number8
DOIs
Publication statusPublished - 1997
Externally publishedYes

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