Angular-asymmetric nonlinear polariton dynamics in semiconductor microcavities
Angular-asymmetric nonlinear polariton dynamics in semiconductor microcavities
Parametric interactions in semiconductor heterostructures in which two exciton quasiparticles mutually scatter are typically weak because they are restricted by energy-momentum conservation. Here, semiconductor microcavities in the strong coupling regime are optically pumped at specific resonant energy and angle of incidence to enormously enhance the parametric interactions. A femtosecond goniometer is devised to allow time-, wavelength- and polarisation-resolved pump-probe spectroscopy. Time-resolved images of the microcavity emission at different angles reveal a highly asymmetric luminescence distribution which switches on as the pump power is increased. Both signal and idler beams can be identified when a probe purse initiates stimulated scattering of polaritons from a reservoir. The images show the rich variety of interactions produced by the coupling of light-matter modes, and the future promise of dispersion engineering.
scattering, regime, transition, system
77-83
Savvidis, P.G.
94ddd90f-ba89-4a68-85ca-5581f33105de
Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
Stevenson, R.M.
aeca1469-391c-4574-a511-06e27b4c61c7
Skolnick, M.S.
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Roberts, J.S.
c4eae59e-8356-4436-b317-670038103d16
Whittaker, D.M.
c2c77600-df06-4a2a-81a2-628964c9204c
2000
Savvidis, P.G.
94ddd90f-ba89-4a68-85ca-5581f33105de
Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
Stevenson, R.M.
aeca1469-391c-4574-a511-06e27b4c61c7
Skolnick, M.S.
f3155840-dc44-4f68-8329-a139a585cc6a
Roberts, J.S.
c4eae59e-8356-4436-b317-670038103d16
Whittaker, D.M.
c2c77600-df06-4a2a-81a2-628964c9204c
Savvidis, P.G., Baumberg, J.J., Stevenson, R.M., Skolnick, M.S., Roberts, J.S. and Whittaker, D.M.
(2000)
Angular-asymmetric nonlinear polariton dynamics in semiconductor microcavities.
Physica Status Solidi (b), 221 (1), .
(doi:10.1002/1521-3951(200009)221:1<77::AID-PSSB77>3.0.CO;2-L).
Abstract
Parametric interactions in semiconductor heterostructures in which two exciton quasiparticles mutually scatter are typically weak because they are restricted by energy-momentum conservation. Here, semiconductor microcavities in the strong coupling regime are optically pumped at specific resonant energy and angle of incidence to enormously enhance the parametric interactions. A femtosecond goniometer is devised to allow time-, wavelength- and polarisation-resolved pump-probe spectroscopy. Time-resolved images of the microcavity emission at different angles reveal a highly asymmetric luminescence distribution which switches on as the pump power is increased. Both signal and idler beams can be identified when a probe purse initiates stimulated scattering of polaritons from a reservoir. The images show the rich variety of interactions produced by the coupling of light-matter modes, and the future promise of dispersion engineering.
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Published date: 2000
Keywords:
scattering, regime, transition, system
Identifiers
Local EPrints ID: 14661
URI: http://eprints.soton.ac.uk/id/eprint/14661
ISSN: 0370-1972
PURE UUID: af9e55a0-87d5-441b-91fb-8b896e0e5e2e
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Date deposited: 24 Feb 2005
Last modified: 15 Mar 2024 05:29
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Contributors
Author:
P.G. Savvidis
Author:
J.J. Baumberg
Author:
R.M. Stevenson
Author:
M.S. Skolnick
Author:
J.S. Roberts
Author:
D.M. Whittaker
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