Sommaire:

The temporal behavior of polarized reflection spectra of a microcavity with a 20-nm quantum well is experimentally studied by means of polarized pump-probe technique. Kerr rotation and ellipticity are obtained for different detunings between exciton and photon modes. The Kerr rotation signal was determined in our work by means of measurement and following analysis of the polarized reflection spectra of the probe beam that allowed us to find a maximum Kerr rotation of 180 degrees in special point on detuning. As it follows from theoretical analysis, the main role in achievement of maximum Kerr rotation plays the asymmetry of the microcavity and the position of the impedance matching point but not the Q-factor of the microcavity.

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