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Pump angle and laser energy dependence of stimulated scattering in microcavities

Pump angle and laser energy dependence of stimulated scattering in microcavities
Pump angle and laser energy dependence of stimulated scattering in microcavities
We show that stimulated polariton scattering in a semiconductor microcavity is observable over a wide range of laser pump angles. The ratio of idler to signal beams is found to vary strongly with angle, consistent with the expected variation of the photon fraction of the idler states, and the increasing probability of scattering of idler polaritons to the exciton reservoir with increasing wave-vector. The observed variation of threshold with angle is in good agreement with a semi-classical treatment of the parametric scattering process.
0031-8965
333-338
Butte, R.
db31c31e-5dce-409d-9690-573871295a6f
Emam-Ismail, M.
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Lemaitre, A.
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Stevenson, R.M.
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Skolnick, M.S.
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Whittaker, D.M.
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Tartakovskii, A.I.
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Baumberg, J.J.
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Savvidis, P.G.
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Roberts, J.S.
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Butte, R.
db31c31e-5dce-409d-9690-573871295a6f
Emam-Ismail, M.
36fe1591-f660-4ed8-9df7-592e84e6acd3
Lemaitre, A.
e7e5fdb2-07b0-437d-80cc-8a713068b207
Stevenson, R.M.
b5820958-4fe4-4159-974b-1352ce275039
Skolnick, M.S.
b5606a9d-e76b-4db8-bda9-fb0cf95f7a2e
Whittaker, D.M.
4dbc44b8-60a1-44b0-b025-32071530b8ac
Tartakovskii, A.I.
7e3511c6-3557-44f6-b5c6-75b843668936
Baumberg, J.J.
3eed479f-7e4f-4290-b814-1e703458c507
Savvidis, P.G.
7706c3c3-47a2-491d-a173-d40f9cf7d9c0
Roberts, J.S.
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Butte, R., Emam-Ismail, M., Lemaitre, A., Stevenson, R.M., Skolnick, M.S., Whittaker, D.M., Tartakovskii, A.I., Baumberg, J.J., Savvidis, P.G. and Roberts, J.S. (2002) Pump angle and laser energy dependence of stimulated scattering in microcavities. Physica Status Solidi A-Applied Research, 190 (2), 333-338. (doi:10.1002/1521-396X(200204)190:2<333::AID-PSSA333>3.0.CO;2-%23).

Record type: Article

Abstract

We show that stimulated polariton scattering in a semiconductor microcavity is observable over a wide range of laser pump angles. The ratio of idler to signal beams is found to vary strongly with angle, consistent with the expected variation of the photon fraction of the idler states, and the increasing probability of scattering of idler polaritons to the exciton reservoir with increasing wave-vector. The observed variation of threshold with angle is in good agreement with a semi-classical treatment of the parametric scattering process.

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Published date: 18 April 2002
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 257626
URI: http://eprints.soton.ac.uk/id/eprint/257626
ISSN: 0031-8965
PURE UUID: f7f27ed1-3026-499b-96de-3b396dd0ea72

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Date deposited: 17 Jun 2003
Last modified: 19 Jul 2019 22:43

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