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, (073309), 073309-1.
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Description/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.
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Physical Sciences and Engineering > Electronics and Computer Science > NANO |
| Item ID: | 256691 |
| Date Deposited: | 18 Jul 2002 |
| Last Modified: | 16 Aug 2012 03:12 |
| Contributors: | Savvidis, P.G. (Author) Baumberg, J.J. (Author) Porras, D. (Author) Whittaker, D. (Author) Skolnick, M. (Author) Roberts, J.S. (Author) |
| Date: | February 2002 |
| Status: | Published |
| Publisher: | The American Physical Society |
| Further Information: | Google Scholar |
| ISI Citation Count: | 30 |
| URI: | http://eprints.soton.ac.uk/id/eprint/256691 |
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