Spatially nonlocal effects on optical absorption properties incoupled quantum wells with an applied electric field

doi:10.1088/1674-1056/23/12/127103

Abstract Based on the microscopic nonlocal optical response theory, the intersubband optical absorption properties in AlGaAs/GaAs couple quantum wells (CQWs) are investigated for p-polarized states. The numerical results show that spatial nonlocality of optical responses can induce a radiation shift on optical absorption spectra due to nonlocal effects. The dependence of the radiation shift on the CQW structure and the applied electric field is clarified. It is also demonstrated that the maximal radiation shift and the least optical absorbance can be obtained by adopting an appropriate CQW structure and a suitable applied electric field. This work may provide some methods of designing the nanomaterials with controllable nonlocality and observing the spatial nonlocal effects in experiment.

Keywords: optical absorption coupled quantum well spatial nonlocality

Received: 14 April 2014
Revised: 03 July 2014
Accepted manuscript online:

PACS:	71.35.Cc	(Intrinsic properties of excitons; optical absorption spectra)
	68.65.Fg	(Quantum wells)
	11.10.Lm	(Nonlinear or nonlocal theories and models)

Fund: Project supported by the National Natural Science Youth Foundation of China (Grant No. 60906042) and the National Natural Science Foundation of China (Grant Nos. 10974058 and 61178003).

Corresponding Authors: Wang Chao-Yang, Wang Guang-Hui
E-mail: jnykq4@yeah.net;wanggh@scnu.edu.cn

Cite this article:

Wang Chao-Yang (王晁阳), Wang Guang-Hui (王光辉) Spatially nonlocal effects on optical absorption properties incoupled quantum wells with an applied electric field 2014 Chin. Phys. B 23 127103


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Spatially nonlocal effects on optical absorption properties incoupled quantum wells with an applied electric field

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