Title :
Coherence Dynamics of Excitons in Symmetric Coupled Quantum Well System
Author :
Tsuji, H. ; Uchida, Y. ; Matsuda, Y. ; Kondo, M. ; Fujii, K. ; Miyagawa, H. ; Tsurumachi, N. ; Koshiba, S. ; Itoh, H. ; Nakanishi, S.
Author_Institution :
Dept. of Adv. Mater. Sci., Kagawa Univ., Takamatsu
Abstract :
We have studied coherence dynamics of excitons in symmetric coupled-quantum well systems by four- wave mixing spectroscopy. We report that the coherence decay of excitons in the coupled quantum wells shows the quantum beats and different dependence on excitation power from that in a reference multiple quantum well.
Keywords :
III-V semiconductors; aluminium compounds; excitons; gallium arsenide; high-speed optical techniques; multiwave mixing; photoluminescence; quantum beat spectra; semiconductor quantum wells; GaAs-AlAs; coherence dynamics; excitation power; excitons; femtosecond four-wave mixing spectroscopy; multiple quantum well; photoluminescence; quantum beats; symmetric coupled quantum well; Coherence; Excitons; Gallium arsenide; Laser beams; Laser excitation; Molecular beam epitaxial growth; Quantum computing; Quantum well devices; Spectroscopy; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-1173-3
Electronic_ISBN :
978-1-4244-1174-0
DOI :
10.1109/CLEOPR.2007.4391638
