Polariton effects in the exciton absorption of GaSe

A. Bosacchi, B. Bosacchi, S. Franchi

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An anomalous temperature and thickness dependence in the optical absorption of the lowest direct exciton of GaSe is reported. The effect, which is interpreted as a result of the competition between exciton-photon interaction and exciton dissipation mechanisms (phonon and surface scattering), provides strong experimental evidence for the polariton description of the exciton absorption process in semiconductors.

Original languageEnglish
Pages (from-to)1086-1089
Number of pages4
JournalPhysical review letters
Issue number18
Publication statusPublished - Jan 1 1976


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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