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Optical spin Hall effect

Optical spin Hall effect
Optical spin Hall effect
A remarkable analogy is established between the well-known spin Hall effect and the polarization dependence of Rayleigh scattering of light in microcavities. This dependence results from the strong spin effect in elastic scattering of exciton polaritons: if the initial polariton state has a zero spin and is characterized by some linear polarization, the scattered polaritons become strongly spin polarized. The polarization in the scattered state can be positive or negative dependent on the orientation of the linear polarization of the initial state and on the direction of scattering. Very surprisingly, spin polarizations of the polaritons scattered clockwise and anticlockwise have different signs. The optical spin Hall effect is possible due to strong longitudinal-transverse splitting and finite lifetime of exciton polaritons in microcavities.
spin, rayleigh scattering, exciton, polariton
0031-9007
136601-[4pp]
Kavokin, Alexey
70ffda66-cfab-4365-b2db-c15e4fa1116b
Malpuech, Guillaume
0fc8f74e-e94f-400d-a320-47d30a2b2508
Glazov, Mikhail
04281e0f-c6f1-4713-ad5f-b990e37eb54e
Kavokin, Alexey
70ffda66-cfab-4365-b2db-c15e4fa1116b
Malpuech, Guillaume
0fc8f74e-e94f-400d-a320-47d30a2b2508
Glazov, Mikhail
04281e0f-c6f1-4713-ad5f-b990e37eb54e

Kavokin, Alexey, Malpuech, Guillaume and Glazov, Mikhail (2005) Optical spin Hall effect. Physical Review Letters, 95 (13), 136601-[4pp]. (doi:10.1103/PhysRevLett.95.136601).

Record type: Article

Abstract

A remarkable analogy is established between the well-known spin Hall effect and the polarization dependence of Rayleigh scattering of light in microcavities. This dependence results from the strong spin effect in elastic scattering of exciton polaritons: if the initial polariton state has a zero spin and is characterized by some linear polarization, the scattered polaritons become strongly spin polarized. The polarization in the scattered state can be positive or negative dependent on the orientation of the linear polarization of the initial state and on the direction of scattering. Very surprisingly, spin polarizations of the polaritons scattered clockwise and anticlockwise have different signs. The optical spin Hall effect is possible due to strong longitudinal-transverse splitting and finite lifetime of exciton polaritons in microcavities.

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Published date: 2005
Keywords: spin, rayleigh scattering, exciton, polariton

Identifiers

Local EPrints ID: 19369
URI: http://eprints.soton.ac.uk/id/eprint/19369
ISSN: 0031-9007
PURE UUID: cd00d5bb-4eb0-49a9-9073-aa2480fcce73

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Date deposited: 13 Feb 2006
Last modified: 02 Dec 2019 19:37

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