Kurumun Atıf Alan Makalesi
Atıf Alan Yayın
Calculation of linear and nonlinear optical absorption coefficients of a spherical quantum dot with parabolic potential
Scopus
Toplam 147 atıf DOI
In the effective mass approximation, we calculated the binding energy and wave function for the 1s-, 1p-, 1d- and 1f-states of a spherical quantum dot (QD) with parabolic potential by using a combination of quantum genetic algorithm (QGA) and Hartree-Fock-Roothaan (HFR) method. In addition, we also investigated the linear and the third-order nonlinear optical absorption coefficients as a function of the incident photon energy for the 1s-1p, 1p-1d and 1d-1f transitions. Our results are shown that the existence of impurity has great influence on optical absorption coefficients. Moreover, the optical absorption coefficients are strongly affected by the incident optical intensity, relaxation time, parabolic potential and dot radius. © 2009 Elsevier B.V. All rights reserved.
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Atıf Yapan Yayın
Refractive index changes and absorption coefficients in a spherical quantum dot with parabolic potential
Scopus
Havuzumuzda 101 atıf almış
In this study, we have calculated the linear, nonlinear and total refractive index changes and absorption coefficients for the transitions 1s-1p, 1p-1d and 1d-1f in a spherical quantum dot with parabolic potential. Quantum Genetic Algorithm (QGA) and Hartree-Fock-Roothaan (HFR) method have been employed to calculate the wavefuctions and energy eigenvalues. The results show that impurity, dot radius, stoichiometric ratio, incident optical intensity and carrier density of the system have important effects on the optical refractive index changes and absorption coefficients. Also, we find that as the transitions between orbitals with big l value move to lower energy region in case with parabolic potential, in case without parabolic potential these transitions move to higher energy region. © 2012 Elsevier B.V. All rights reserved.
Atıf Yapan Makale Bilgileri
Kurumlar (2)
Aksaray Üniversitesi
Aksaray, Turkey
Selçuk Üniversitesi
Selçuklu, Turkey