Nonlinear magneto-optic Kerr effect in semiconductor microcavities

Robert Frey (1) , Maxime Clusel (2) , Adrian Radu (2) , Régis André (3) , Christos Flytzanis (4, 5)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Manolia
2 OPQ - Laboratoire d'optique quantique
3 LSP - Laboratoire de Spectrométrie Physique
4 LPA - Laboratoire Pierre Aigrain
5 LBNL - Lawrence Berkeley National Laboratory [Berkeley]

The photo-induced modifications of the strong magneto-optic Kerr effect have been studied in a semimagnetic semiconductor microcavity operated in the strong coupling regime. These are traced to the saturation and many body interaction blue shift of the exciton transition frequency, which result in a photo-induced reduction of the effective exciton-cavity coupling. Its impact is most striking in the case of initially tuned microcavity, where a modification of the exciton-cavity coupling results in photo-induced polarization rotations of about 30 degrees for laser fluences as low as 1 μJ/cm2 and magnetic field intensities of 0.2 T.

Domaines: Autre [cond-mat.other]

Robert Frey, Maxime Clusel, Adrian Radu, Régis André, Christos Flytzanis. Nonlinear magneto-optic Kerr effect in semiconductor microcavities. Solid State Communications, 2002, 123 (1-2), pp.59-62. ⟨10.1016/S0038-1098(02)00198-9⟩. ⟨hal-00641703⟩