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Ring emission and exciton-pair scattering in semiconductor microcavities

Savvidis, P.G., Baumberg, J.J., Porras, D., Whittaker, D., Skolnick, M. and Roberts, J.S. (2002) Ring emission and exciton-pair scattering in semiconductor microcavities PHYSICAL REVIEW B, 65, (73309), 073309-1.

Record type: Article

Abstract

Polariton microemitters are semiconductor devices that take advantage of the strong coupling of light and matter to produce efficient optical sources. Injecting an exciton gas into such a semiconductor microcavity can produce annular optical emission of a specific cone angle. We demonstrate that at higher exciton densities or temperatures, this ring continuously decreases in diameter due to the greater energy that can be carried off in exciton-pair scattering processes. These Coulomb-mediated exciton-exciton scatterings are shown to dominate the polariton relaxation and optical emission.

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More information

Published date: February 2002
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 256691
URI: http://eprints.soton.ac.uk/id/eprint/256691
PURE UUID: 5a81b5fd-e20d-4a8f-9ee9-9dec34a3c5d4

Catalogue record

Date deposited: 18 Jul 2002
Last modified: 18 Jul 2017 09:44

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Contributors

Author: P.G. Savvidis
Author: J.J. Baumberg
Author: D. Porras
Author: D. Whittaker
Author: M. Skolnick
Author: J.S. Roberts

University divisions

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