Coherent dynamics of excitons in radiatively coupled multiple quantum well structures and microcavities

J. Kuhl, M. Huebner, D. Ammerlahn, T. Stroucken, B. Grote, S. Haas, S. W. Koch, G. Khitrova, H. Gibbs, R. Hey, K. Ploog

Research output: Contribution to conferencePaperpeer-review

Abstract

The exciton/photon coupling in multiple quantum well structures and microcavities was investigated. The time-integrated curves from the degenerate four-wave mixing on GaAs single and multiple quantum well Bragg samples revealed a double exponential decay. The initial rapid drop with a decay time of 2.5 ps reflected the depletion of the superradiant mode. The remaining signal due to the subradiant mode decayed with a time constant of 9 ps giving an upper limit of 40 μeV for disorder-induced scattering to the homogeneous linewidth. The interwell exciton/photon coupling was a pronounced low excitation phenomenon that rapidly disappeared with increasing excitation intensity due to intrawell exciton/exciton Coulomb scattering.

Original languageEnglish (US)
Pages450-451
Number of pages2
StatePublished - Dec 1 1998
EventProceedings of the 1998 IEEE Nonlinear Optics Topical Meeting - Princeville, HI, USA
Duration: Aug 10 1998Aug 14 1998

Other

OtherProceedings of the 1998 IEEE Nonlinear Optics Topical Meeting
CityPrinceville, HI, USA
Period8/10/988/14/98

ASJC Scopus subject areas

  • Engineering(all)

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