Optical absorption in asymmetrical Gaussian potential quantum dot under the application of an electric field

We theoretically investigate the optical absorption coefficient (OAC) in asymmetrical Gaussian potential quantum dots subject to an applied electric field. Confined wave functions together with energies of electron energies in an effective mass approximation framework are obtained. The OAC is expres...

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Bibliographic Details
Published inChinese physics B Vol. 29; no. 8; p. 87302
Main Authors Li, Xue-Chao, Ye, Chun-Bao, Gao, Juan, Wang, Bing
Format Journal Article
LanguageEnglish
Published 01.07.2020
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Summary:We theoretically investigate the optical absorption coefficient (OAC) in asymmetrical Gaussian potential quantum dots subject to an applied electric field. Confined wave functions together with energies of electron energies in an effective mass approximation framework are obtained. The OAC is expressed according to the iterative method and the compact-density-matrix approach. Based on our results, OAC is sensitively dependent on external electric field together with the incident optical intensity. Additionally, peak shifts into greater energy as the quantum dot radius decrease. Moreover, the parameters of Gaussian potential have a significant influence on the OAC.
ISSN:1674-1056
DOI:10.1088/1674-1056/ab9284