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

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

›› 2014, Vol. 23 ›› Issue (12): 127103-127103.doi: 10.1088/1674-1056/23/12/127103

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

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

王晁阳, 王光辉

Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China

收稿日期:2014-04-14 修回日期:2014-07-03 出版日期:2014-12-15 发布日期:2014-12-15
基金资助:
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).

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

Wang Chao-Yang (王晁阳), Wang Guang-Hui (王光辉)

Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China

Received:2014-04-14 Revised:2014-07-03 Online:2014-12-15 Published:2014-12-15
Contact: Wang Chao-Yang, Wang Guang-Hui E-mail:jnykq4@yeah.net;wanggh@scnu.edu.cn
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: optical absorption, coupled quantum well, spatial nonlocality

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.

Key words: optical absorption, coupled quantum well, spatial nonlocality

中图分类号: (Intrinsic properties of excitons; optical absorption spectra)

71.35.Cc

68.65.Fg (Quantum wells) 11.10.Lm (Nonlinear or nonlocal theories and models)

王晁阳, 王光辉. Spatially nonlocal effects on optical absorption properties incoupled quantum wells with an applied electric field[J]. , 2014, 23(12): 127103-127103.

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[J]. Chin. Phys. B, 2014, 23(12): 127103-127103.

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

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

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