Linear and nonlinear intersubband optical absorptions in an asymmetric rectangular quantum well

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dc.contributor.authorKarabulut, I.
dc.contributor.authorAtav, U.
dc.contributor.authorSafak, H.
dc.contributor.authorTomak, M.
dc.date.accessioned2020-03-26T17:17:38Z
dc.date.available2020-03-26T17:17:38Z
dc.date.issued2007
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe linear and nonlinear intersubband optical absorptions in AlxlGa1-xlAs/GaAs/AlxrGa1-xrAs asymmetric rectangular quantum well are studied within the framework of the density matrix formalism. We have calculated the electron energy levels and the envelope wave functions using the effective mass approach. In addition, we have obtained an expression for saturation intensity. It is shown that the parameters such as asymmetry and width of potential well not only shift the peak positions in absorption spectrum but also considerably modify their height. These results suggest that the absorption process can be easily controlled by the structure parameters of an asymmetric rectangular quantum well. Also, the incident optical intensity has a great effect on the total absorption spectrum. We have seen that the absorption peak is reduced by half when the optical intensity is approximately 0.8 MW/cm(2) for well width L = 90 angstrom and beta = 0.5. Moreover, it is seen that the saturation intensity is quite sensitive to the structure parameters of an asymmetric rectangular quantum well. Thus, the results presented here can be useful for electro-optical modulators and photodetectors in the infrared region.en_US
dc.identifier.doi10.1140/epjb/e2007-00055-1en_US
dc.identifier.endpage288en_US
dc.identifier.issn1434-6028en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage283en_US
dc.identifier.urihttps://dx.doi.org/10.1140/epjb/e2007-00055-1
dc.identifier.urihttps://hdl.handle.net/20.500.12395/21456
dc.identifier.volume55en_US
dc.identifier.wosWOS:000244672600007en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSPRINGERen_US
dc.relation.ispartofEUROPEAN PHYSICAL JOURNAL Ben_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleLinear and nonlinear intersubband optical absorptions in an asymmetric rectangular quantum wellen_US
dc.typeArticleen_US

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