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Observation of excitonic effects on electroabsorption in coupled quantum wells

Yasunori Tokuda, Kyozo Kanamoto, Yuji Abe, and Noriaki Tsukada
Phys. Rev. B 41, 10280(R) – Published 15 May 1990
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Abstract

An experimental study was made on the electroabsorption of asymmetric GaAs double quantum wells separated by thin AlAs tunnel barriers to better understand the optical properties in the coupled systems. It was clearly shown that the field-dependent absorption characteristics, i.e., the anticrossing properties, were not fully explained by the predictions for the optical transitions between the quantized electronic levels but better interpreted by taking account of the contribution of the exciton binding energies, i.e, in terms of tunneling between the excitonic states in the adjacent wells.

  • Received 1 February 1990

DOI:https://doi.org/10.1103/PhysRevB.41.10280

©1990 American Physical Society

Authors & Affiliations

Yasunori Tokuda, Kyozo Kanamoto, Yuji Abe, and Noriaki Tsukada

  • Central Research Laboratory, Mitsubishi Electric Corporation, Amagasaki, Hyogo 661, Japan

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Issue

Vol. 41, Iss. 14 — 15 May 1990

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