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Polariton thermalization in GaN microcavities in the strong light-matter coupling regime

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Superlattices and Microstructures, 41 (5-6): 376 - 380 (2007)Proceedings of the 6th International Conference on Physics of Light-Matter Coupling in Nanostructures, 6th International Conference on Physics of Light-Matter Coupling in Nanostructures.
DOI: DOI: 10.1016/j.spmi.2007.03.016

Аннотация

We discuss the thermalization of the polariton population from a bulk GaN lambda/2 microcavity at room temperature. Simultaneous optical measurements of reflectivity and photoluminescence (PL), as well as time resolved measurements, reveal strong light-matter coupling. Transfer matrix theory is used to calculate reflectivity, absorption, and transmission coefficients for the structure. The PL emission is found to be thermalized, despite its very short lifetime, suggesting the existence of very fast energy relaxation channels.

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