Time-integrated degenerate-four-wave mixing (TI- DFWM) experiments at liquid helium temperature on the heavy-hole exciton resonance of a wedged (In,Ga)As/GaAs quantum well Bragg structure reveal a strong dependence of the dynamic and amplitude of the coherent nonlinear optical response in dependence on sample position. In the vicinity of the Bragg resonance the signal amplitude depends on both the rapid dephasing due to enhanced superradiant decay of the excitons and on the constructive interference of the signal amplitude in the backward Bragg reflection direction. We find that even in the presence of moderate inhomogeneous broadening of the excitonic resonance the superradiant decay dominates the excitonic nonlinearity at Bragg resonance. Our experimental results can be fairly well described by solutions based on the semiconductor Maxwell-Bloch equations taking disorder into account.

© 1998 Optical Society of America

PDF Article
More Like This
Coherent dynamics of coupled exciton-photon modes in multiple quantum wells and microcavities

J. Kuhl, M. Hübner, D. Ammerlahn, B. Grote, T. Stroucken, S. Haas, A. Knorr, S.W. Koch, G. Khitrova, H. Gibbs, R. Hey, and K. Ploog
QFB1 International Quantum Electronics Conference (IQEC) 1998

Time-dependent radiation pattern of coupled exciton-photon modes in multiple quantum well Bragg structures

M. Hübner, J. Kuhl, B. Grote, T. Stroucken, S. Haas, A. Knorr, and S.W. Koch
QFB2 International Quantum Electronics Conference (IQEC) 1998

Radiative coupling of excitons in multiple quantum well structures

J Kuhl, M Hubner, T Stroucken, A Knorr, SW Koch, R Hey, and K Ploog
WJ2 International Quantum Electronics Conference (IQEC) 1996


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription