Refractive index changes and absorption coefficients in a spherical quantum dot with parabolic potential
Yükleniyor...
Dosyalar
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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 I value move to lower energy region in case with parabolic potential, in case without parabolic potential these transitions move to higher energy region. (C) 2012 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Refractive index, Absorption coefficient, Spherical quantum dot, Parabolic potential, QGA and HFR method
Kaynak
JOURNAL OF LUMINESCENCE
WoS Q Değeri
Q1
Scopus Q Değeri
Q2
Cilt
132
Sayı
10
