Spin-resolved femtosecond magnetoexciton interactions in GaAs quantum wells
- 15 September 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (12) , 7919-7922
- https://doi.org/10.1103/physrevb.46.7919
Abstract
We use femtosecond nonlinear spectroscopy and high magnetic fields to study quantum-well excitonic states of well-defined angular momentum character. Our results show that the femtosecond nonlinear optical response is governed by exciton-exciton interactions that depend on the angular momentum character of the initially excited distribution. Remarkably, optically active excitons at high magnetic field undergo spin relaxation to an optically inactive state.Keywords
This publication has 13 references indexed in Scilit:
- Optical properties of quasi-zero-dimensional magneto-excitonsApplied Physics A, 1991
- Femtosecond spectroscopy of carrier-spin relaxation in GaAs-As quantum wellsPhysical Review B, 1991
- Femtosecond dynamics of excitons under extreme magnetic confinementPhysical Review Letters, 1990
- Linear and nonlinear optical properties of semiconductor quantum wellsAdvances in Physics, 1989
- Exciton mixing in quantum wellsPhysical Review B, 1988
- Generation and kilohertz-rate amplification of femtosecond optical pulses around 800 nmJournal of the Optical Society of America B, 1987
- Theory of magnetoexcitons in quantum wellsPhysical Review Letters, 1987
- Theory of transient excitonic optical nonlinearities in semiconductor quantum-well structuresPhysical Review B, 1985
- Holes at GaAs-As heterojunctions in magnetic fieldsPhysical Review B, 1985
- Two-dimensional electron-hole fluid in a strong perpendicular magnetic field: Exciton Bose condensate or maximum density two-dimensional dropletPhysical Review B, 1985