Femtosecond time-resolved four-wave mixing from biexcitons in GaAs quantum wells: Dominance of the interaction-induced signal
- 15 August 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 50 (8) , 5775-5778
- https://doi.org/10.1103/physrevb.50.5775
Abstract
Time-resolved (TR) four-wave mixing (FWM) experiments are performed on a high-quality GaAs quantum-well sample where biexcitons make the dominant contribution under certain experimental conditions. TR-FWM peaks well after both beams passed through, regardless of relative contributions of biexcitons to FWM. Our experiments show that the diffraction of the interaction-induced field dominates FWM from biexcitons, as well as from excitons.Keywords
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