Excitonic effects on the nonlinear optical properties of small quantum dots

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dc.contributor.authorKarabulut, I.
dc.contributor.authorSafak, H.
dc.contributor.authorTomak, M.
dc.date.accessioned2020-03-26T17:26:53Z
dc.date.available2020-03-26T17:26:53Z
dc.date.issued2008
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe excitonic effects on the nonlinear optical properties of small quantum dots with a semiparabolic confining potential are studied under the density matrix formalism. First, within the framework of the strong confinement approximation, we present the excitonic states and then calculate the excitonic effects on the nonlinear optical properties, such as second harmonic generation, third harmonic generation, nonlinear absorption coefficient and refractive index changes. We find the explicit analytical expressions between the corresponding nonlinear optical properties with and without considering the excitonic effects. It is seen that these analytical expressions are related only to ratios of the effective masses of electron and hole. These explicit expressions indicate that the excitonic effects on the corresponding nonlinear optical properties become more important with increasing orders of the optical susceptibilities. In addition, we suggest a scaling rule for the nth-order susceptibility as gamma((n+1)/2). The effect of the confining potential frequency on the corresponding nonlinear optical properties is also studied. Our results show a remarkable dependence of nonlinear optical properties on both the excitonic effects and the confining potential frequency.en_US
dc.identifier.doi10.1088/0022-3727/41/15/155104en_US
dc.identifier.issn0022-3727en_US
dc.identifier.issue15en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://dx.doi.org/10.1088/0022-3727/41/15/155104
dc.identifier.urihttps://hdl.handle.net/20.500.12395/22401
dc.identifier.volume41en_US
dc.identifier.wosWOS:000257839700025en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIOP PUBLISHING LTDen_US
dc.relation.ispartofJOURNAL OF PHYSICS D-APPLIED PHYSICSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleExcitonic effects on the nonlinear optical properties of small quantum dotsen_US
dc.typeArticleen_US

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