cw and femtosecond optical nonlinearities of type-II quantum wells

Journal Article · Sun Mar 10 23:00:00 EST 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.1358· OSTI ID:5883436

Olbright, G R; Fu, W S; Owyoung, A; Klem, J F ^[1]; Binder, R; Galbraith, I; Koch, S W ^[2]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (USA)
2. Optical Sciences Center and Department of Physics, University of Arizona, Tucson, Arizona 85721 (USA)

Femtosecond time-resolved and quasi-cw measurements of optical nonlinearities of type-II GaAs/AlAs quantum wells are reported. A pronounced blueshift of the heavy-hole exciton is observed, which develops on a 100-ps time scale after resonant interband excitation. The experimental observations are analyzed using many-body theory, explaining exciton blueshift and dynamical evolution in terms of electron-hole Coulomb enhancement, hole-phase-space filling, and hole-plasma cooling.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5883436
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:10; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ABSORPTION SPECTRA
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
CARRIER DENSITY
COULOMB FIELD
DATA
ELECTRIC FIELDS
ELECTRON-HOLE COUPLING
EXCITONS
EXPERIMENTAL DATA
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
HETEROJUNCTIONS
HOLES
INFORMATION
JUNCTIONS
MANY-BODY PROBLEM
NONLINEAR OPTICS
NUMERICAL DATA
OPTICS
PNICTIDES
QUASI PARTICLES
RESOLUTION
RESONANCE
SEMICONDUCTOR JUNCTIONS
SPECTRA
THEORETICAL DATA
TIME RESOLUTION
TIMING PROPERTIES
VERY LOW TEMPERATURE