Measuring the ultrafast dynamics of Coulomb correlation effects: Dephasing in nonequilibrium Fermi seas

Journal Article · Sat Jun 01 00:00:00 EDT 1996 · Journal of the Optical Society of America, Part B: Optical Physics

DOI:https://doi.org/10.1364/JOSAB.13.001284· OSTI ID:285895

Mycek, M; Bigot, J ^[1]; Perakis, I E ^[2]; Chemla, D S ^[1]

---

1. Department of Physics, University of California at Berkeley, and Materials Sciences Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road MS 2-300, Berkeley, California 94720 (United States)
2. Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States)

We measure the dynamics of the quantum phase coherence of the wave function describing interacting electrons and holes optically excited into the continuum of a GaAs/AlGaAs quantum well. We achieve this by spectrally resolving both the transient four-wave mixing signal and the differential transmission signal arising from such interacting carriers. We observe a dynamical blue shift of the coherent four-wave mixing emission spectrum with respect to the excitation laser pulse and interpret this as a direct manifestation of the dynamic Coulomb correlation effects in this many-body system. {copyright} {ital 1996 Optical Society of America.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 285895
• Journal Information: Journal of the Optical Society of America, Part B: Optical Physics, Journal Name: Journal of the Optical Society of America, Part B: Optical Physics Journal Issue: 6 Vol. 13; ISSN JOBPDE; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ARSENIDES
ENERGY SPECTRA
GALLIUM ARSENIDES
LIGHT TRANSMISSION
PHOTOLUMINESCENCE
PULSED IRRADIATION
SPECTRAL SHIFT