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Spontaneous polarization buildup in a room-temperature polariton laser

Spontaneous polarization buildup in a room-temperature polariton laser
Spontaneous polarization buildup in a room-temperature polariton laser
We observe the buildup of strong (?50%) spontaneous vector polarization in emission from a GaNbased
polariton laser excited by short optical pulses at room temperature. The Stokes vector of emitted
light changes its orientation randomly from one excitation pulse to another, so that the time-integrated
polarization remains zero. This behavior is completely different from any previous laser. We interpret this
observation in terms of the spontaneous symmetry breaking in a Bose-Einstein condensate of exciton
polaritons.
136409-[4 pages]
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b

Kavokin, A.V. (2008) Spontaneous polarization buildup in a room-temperature polariton laser. Physical Review Letters, 101 (13), 136409-[4 pages]. (doi:10.1103/PhysRevLett.101.136409).

Record type: Article

Abstract

We observe the buildup of strong (?50%) spontaneous vector polarization in emission from a GaNbased
polariton laser excited by short optical pulses at room temperature. The Stokes vector of emitted
light changes its orientation randomly from one excitation pulse to another, so that the time-integrated
polarization remains zero. This behavior is completely different from any previous laser. We interpret this
observation in terms of the spontaneous symmetry breaking in a Bose-Einstein condensate of exciton
polaritons.

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Published date: September 2008
Organisations: Quantum, Light & Matter Group

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Local EPrints ID: 358756
URI: http://eprints.soton.ac.uk/id/eprint/358756
PURE UUID: 0e4cf2b3-c48e-497a-91fc-ca915ec4d4d4

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Date deposited: 10 Oct 2013 12:09
Last modified: 14 Mar 2024 15:07

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