Three-beam four-wave mixing shows anti-correlated scattering of HH and LH excitons in GaAs/AlGaAs quantum wells, suggesting that exciton-phonon scattering dominates the exciton dephasing. The correlation increases at higher excitation densities.
© 2005 Optical Society of America
(190.0190) Nonlinear optics : Nonlinear optics
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(320.0320) Ultrafast optics : Ultrafast optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
A. G. Spivey, C. N. Borca, and S. T. Cundiff, "Dephasing of the LH-HH Exciton Raman Coherence in GaAs Quantum Wells: Distinguishing between Phonon and Carrier Scattering," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2005), paper JThE121.
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