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Accueil > La Recherche > Axes & Equipes > Physique de l’Exciton, du Photon & du Spin > Optique des états collectifs et des spins (OECS) > Etats collectifs dans les semiconducteurs > Physics of microcavities : spin dynamics, polariton condensates and lasers
n-GaAs microcavity as an efficient Faraday rotator
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Faraday rotation up to 19◦ in the absence of an external magnetic field is demonstrated in an n-type bulk GaAs microcavity under circularly polarized optical excitation. This strong effect is achieved because (i) the spin-polarized electron gas is an efficient Faraday rotator and (ii) the light wave makes multiple round trips in the cavity.
R. Giri et al Phys. Rev. B 85, 195313 (2012)
