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Oscillations of the degree of circular polarization in the optical spin hall effect

Oscillations of the degree of circular polarization in the optical spin hall effect
Oscillations of the degree of circular polarization in the optical spin hall effect

The optical spin Hall effect appears when elastically scattered exciton polaritons couple to an effective magnetic field inside of quantum wells in semiconductor microcavities. Theory predicts an oscillation of the pseudospin of the exciton polaritons in time. Here, we present a detailed analysis of momentum space dynamics of the exciton polariton pseudospin. Compared to what is predicted by theory, we find a higher modulation of the temporal oscillations of the pseudospin. We attribute the higher modulation to additional components of the effective magnetic field which have been neglected in the foundational theory of the optical spin Hall effect. Adjusting the model by adding non-linear polariton-polariton interactions, we find a good agreement in between the experimental results and simulations.

1063-7834
1606-1610
Schmidt, D.
20b61874-0e0e-4a40-b4f8-220e7cbf9a99
Berger, B.
cce2b705-e442-4625-9479-d463b0dd3827
Bayer, M.
16cfef86-dcd4-49d0-a0d9-0b06f0d6d16a
Schneider, C.
2537e550-4f1a-43cd-877f-32d60888a673
Höfling, S.
46f0d11d-1c5a-4de9-a103-16b2686b4dda
Sedov, E.
09ed8f98-fb1e-44d5-a192-10b0c6541cd9
Kavokin, A.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Aßmann, M.
884b1cd5-34a1-40a8-9f60-bd1263fd2ea9
Schmidt, D.
20b61874-0e0e-4a40-b4f8-220e7cbf9a99
Berger, B.
cce2b705-e442-4625-9479-d463b0dd3827
Bayer, M.
16cfef86-dcd4-49d0-a0d9-0b06f0d6d16a
Schneider, C.
2537e550-4f1a-43cd-877f-32d60888a673
Höfling, S.
46f0d11d-1c5a-4de9-a103-16b2686b4dda
Sedov, E.
09ed8f98-fb1e-44d5-a192-10b0c6541cd9
Kavokin, A.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Aßmann, M.
884b1cd5-34a1-40a8-9f60-bd1263fd2ea9

Schmidt, D., Berger, B., Bayer, M., Schneider, C., Höfling, S., Sedov, E., Kavokin, A. and Aßmann, M. (2018) Oscillations of the degree of circular polarization in the optical spin hall effect. Physics of the Solid State, 60 (8), 1606-1610. (doi:10.1134/S1063783418080206).

Record type: Article

Abstract

The optical spin Hall effect appears when elastically scattered exciton polaritons couple to an effective magnetic field inside of quantum wells in semiconductor microcavities. Theory predicts an oscillation of the pseudospin of the exciton polaritons in time. Here, we present a detailed analysis of momentum space dynamics of the exciton polariton pseudospin. Compared to what is predicted by theory, we find a higher modulation of the temporal oscillations of the pseudospin. We attribute the higher modulation to additional components of the effective magnetic field which have been neglected in the foundational theory of the optical spin Hall effect. Adjusting the model by adding non-linear polariton-polariton interactions, we find a good agreement in between the experimental results and simulations.

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More information

e-pub ahead of print date: 3 August 2018
Published date: August 2018

Identifiers

Local EPrints ID: 425788
URI: https://eprints.soton.ac.uk/id/eprint/425788
ISSN: 1063-7834
PURE UUID: bac95a57-8940-4e5c-9126-c4cfe7f69d12

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Date deposited: 02 Nov 2018 17:30
Last modified: 02 Nov 2018 17:30

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Contributors

Author: D. Schmidt
Author: B. Berger
Author: M. Bayer
Author: C. Schneider
Author: S. Höfling
Author: E. Sedov
Author: A. Kavokin
Author: M. Aßmann

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