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- Kim, Dai-Sik
- Nano Optics Group
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FEMTOSECOND 4-WAVE-MIXING STUDIES OF EXCITON LOCALIZATION AND EXCITON-EXCITON INTERACTION IN ZNSE/ZNXCD1-XSE QUANTUM-WELLS
- Author(s)
- FISCHER, AJ, KIM, DS, HAYS, J, SHAN, W, SONG, JJ, EASON, DB, REN, J, SCHETZINA, JF, LUO, H, FURDYNA, JK
- Issued Date
- 1994-12
- Citation
- PHYSICAL REVIEW B, v.50, no.23, pp.17643 - 17646
- Abstract
- Femtosecond degenerate four-wave-mixing experiments are performed in the two-beam self-diffracted geometry in two inhomogeneously broadened ZnSe/ZnxCd1−xSe multiple-quantum-well samples at the excitonic resonances at 10 K. A large change in the dephasing time across the linewidth of one sample is observed, whereas it is nearly constant in the other, implying a different degree of localization in these two samples. Exciton-exciton interaction rates are determined across the linewidth, and it is shown that the exciton-exciton interaction rate is much less for excitons that are strongly localized compared to those that are extended.
- Publisher
- AMERICAN PHYSICAL SOC
- ISSN
- 0163-1829
- Keyword
- HOMOGENEOUS LINEWIDTH, RELAXATION, RESOLUTION, DISORDER
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