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Accession Number:
ADP007836
Title:
Large Excitonic Blue-Shift and Nonlinearity in Narrow Asymmetric Coupled Quantum Wells,
Corporate Author:
JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
Report Date:
1992-05-22
Abstract:
Conventional self-electrooptic effect device SEED is based on the so-called quantum-confined Stark effect QCSE, which results in the red-shift of the effective bandgap. Thus, it has significant residual absorption and requires high operational voltage. In the attempt to overcome these disadvantages, the so-called blue-shifting SEED schemes were proposed. Blue-shifting SEED can be based on QCSE in strained 111 structures and Wannier-Stark localization. Here, we report our observation of blue-shift of heavy-hole excitonic transition and third-order optical nonlinearity in narrow GaAsAl.Ga1-xAs asymmetric coupled quantum wells ACQWs based on the anticrossing of strongly coupled heavy-hole levels in two narrow ACQWs for the first time.
Supplementary Note:
This article is from 'Organization of the Optical Society of America Photonic Science Topical Meeting Series. Volume 7. Quantum Optoelectronics Held in Salt Lake City, Utah on 11-13 March 1991,' AD-A253 823, p78-81.
Pages:
0004
File Size:
0.00MB
