Femtosecond circular dichroism study of nonthermal carrier distributions in two- and zero-dimensional semiconductors

We report the time-resolved circular dichroism induced by nonthermal distributions of carriers in GaAs quantum wells, separating completely, for the first time, the effects of screening and phase space filling. Thermalization of the initial excitation is strongly inhibited when carriers are laterall...

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Bibliographic Details
Published in:Physical review letters 1992-05, Vol.68 (20), p.3080-3083
Main Authors: STARK, J. B, KNOX, W. H, CHEMLA, D. S
Format: Article
Language:English
Subjects:
360606 - Other Materials- Physical Properties- (1992-)
ARSENIC COMPOUNDS
ARSENIDES
CHARGE CARRIERS
Condensed matter: electronic structure, electrical, magnetic, and optical properties
DICHROISM
DIMENSIONS
DISTRIBUTION FUNCTIONS
Exact sciences and technology
FUNCTIONS
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
HETEROJUNCTIONS
JUNCTIONS
MAGNETIC CIRCULAR DICHROISM
MATERIALS
MATERIALS SCIENCE
NONLINEAR OPTICS
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of specific thin films
OPTICS
PHOTO-INDUCED TRANSIENT SPECTROSCOPY
Physics
PNICTIDES
RESOLUTION
SCREENING
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR MATERIALS
SLOWING-DOWN
SPECTRAL RESPONSE
SPECTROSCOPY
THERMALIZATION
TIME RESOLUTION
TIMING PROPERTIES
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Description
Summary:We report the time-resolved circular dichroism induced by nonthermal distributions of carriers in GaAs quantum wells, separating completely, for the first time, the effects of screening and phase space filling. Thermalization of the initial excitation is strongly inhibited when carriers are laterally confined into zero dimensions by a large perpendicular magnetic field.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.68.3080