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Conferences > QELS > 1997 > QThD > QThD3
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1997),
  • paper QThD3

Femtosecond Rayleigh scattering and luminescence in GaAs quantum wells under resonant excitation

S. Haacke, R. A. Taylor, and B. Deveaud

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Abstract

We present femtosecond emission experiments on resonantly created excitons with densities as low as a few 108cm−2. Thanks to an improved detection sensitivity we can follow the gradual change in the physical origin of the secondary emission down to the lowest exciton densities. At high densities exciton/exciton and exciton/free carrier scattering lead to homogeneous broadening and rapid dephasing as shown by time-resolved reflectivity.

© 1997 Optical Society of America

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