한국광학회:학술대회논문집 (Proceedings of the Optical Society of Korea Conference)
- 한국광학회 2001년도 제12회 정기총회 및 01년도 동계학술발표회
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- Pages.50-51
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- 2001
GaAs 다중 양자 우물 구조에서 공명 여기된 엑시톤들에 의한 광학적 비선형성의 연구
Optical Nonlinear Effects of Resonantly Excited Excitons on Excitons in GaAs Multiple Quantum Wells
- Park, Moongoo (Department of Physics, Yonsei University) ;
- Je, Koo-Chul (Department of Physics, Yonsei University) ;
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Park, Seung-Han
(Department of Physics, Yonsei University)
- 발행 : 2001.02.01
초록
We investigate the effect of resonantly excited excitons on the optical-absorption of the n=1hh and n=2hh exciton resonances in GaAs quantum wells. Under quasistationary excitation condition using the pump and probe beam at tow temperature, we report the first observation of long range Coulomb screening by two dimensional exciton-exciton interaction, and discriminate unambiguously exciton bleaching between by long range Coulomb screening and the Pauli exclusion principle. (omitted)
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