Spontaneous polarization buildup in a room-temperature polariton laser.

Baumberg, J J; Kavokin, A V; Christopoulos, S; Grundy, A J D; Butté, R; Christmann, G; Solnyshkov, D D; Malpuech, G; von Högersthal, G Baldassarri Höger; Feltin, E; Carlin, J-F; Grandjean, N

Baumberg, J J; Kavokin, A V; Christopoulos, S; Grundy, A J D; Butté, R; Christmann, G; Solnyshkov, D D; Malpuech, G; von Högersthal, G Baldassarri Höger; Feltin, E; Carlin, J-F; Grandjean, N.

Afiliación

Baumberg JJ; NanoPhotonics Centre, Department of Physics, University of Cambridge, Cambridge, CB3 0HE, United Kingdom.

Phys Rev Lett ; 101(13): 136409, 2008 Sep 26.

Article en En | MEDLINE | ID: mdl-18851475

RESUMEN

We observe the buildup of strong (approximately 50%) spontaneous vector polarization in emission from a GaN-based 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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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2008 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos

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