Influence of the exciton lifetime on resonant Raman scattering in quantum wells
Authors:
- 15 October 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (16) , 10490-10493
Abstract
We report huge enhancements in the intensity of LO Raman scattering for photon energies resonant with the band-edge exciton of GaAs/AlAs multiple quantum wells, due to a sharpening of the resonance caused by the increased exciton phase-coherence lifetime. This explains the redshift of the resonance Raman profile with respect to the absorption, the much stronger heavy-hole resonance than that of the light-hole resonance, and the rapid decline of Raman intensity with temperature.Keywords
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