We report the observation of weak localization of light in a semiconductor microcavity. The intrinsic disorder in a microcavity leads to multiple scattering and hence to static speckle. We show that averaging over realizations of the disorder reveals a coherent backscattering cone that has a coherent enhancement factor 2, as required by reciprocity. The coherent backscattering cone is observed along a ring-shaped pattern due to confinement by the microcavity.
Coherent vs incoherent emission from semiconductor structures after resonant femtosecond excitation / M. GURIOLI; F. BOGANI; S. CECCHERINI; AND M. COLOCCI. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 78:(1997), pp. 3205-3208. [10.1103/PhysRevLett.78.3205]
Coherent vs incoherent emission from semiconductor structures after resonant femtosecond excitation
GURIOLI, MASSIMO;BOGANI, FRANCO;CECCHERINI, SIMONE;COLOCCI, MARCELLO
1997
Abstract
We report the observation of weak localization of light in a semiconductor microcavity. The intrinsic disorder in a microcavity leads to multiple scattering and hence to static speckle. We show that averaging over realizations of the disorder reveals a coherent backscattering cone that has a coherent enhancement factor 2, as required by reciprocity. The coherent backscattering cone is observed along a ring-shaped pattern due to confinement by the microcavity.
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