Polariton Effects in the Exciton Absorption of GaSe
- 3 May 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 36 (18), 1086-1089
- https://doi.org/10.1103/physrevlett.36.1086
Abstract
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.Keywords
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