Linear and nonlinear absorption coefficients of spherical two-electron quantum dot

被引：34

作者：

Yakar, Yusuf ^{[1
]}

Cakir, Bekir ^{[2
]}

Ozmen, Ayhan ^{[2
]}

机构：

[1] Aksaray Univ, Fac Arts & Sci, Dept Phys, TR-68100 Campus, Aksaray, Turkey

[2] Selcuk Univ, Fac Sci, Dept Phys, TR-42031 Campus, Konya, Turkey

来源：

COMPUTER PHYSICS COMMUNICATIONS | 2015年 / 188卷

关键词：

Spherical quantum dot; Linear and nonlinear absorption coefficients; Quantum Genetic Algorithm and Hartree-Fock-Roothaan method; REFRACTIVE-INDEX CHANGES; CENTER HYDROGENIC IMPURITY; OPTICAL-PROPERTIES; BINDING-ENERGY; HYDROSTATIC-PRESSURE; INTERSUBBAND TRANSITIONS; OSCILLATOR-STRENGTH; EXCITATION KINETICS; CONFINED HYDROGEN; DONOR IMPURITY;

D O I：

10.1016/j.cpc.2014.11.011

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In this study, optical properties of two-electron quantum dot confined by an infinite spherical potential surface have been investigated. Linear, nonlinear and total absorption coefficients of S -> P, P -> D and D -> F dipole-allowed transitions between singlet-singlet and triplet-triplet states have been calculated as a function of dot radius and photon energy. The results show that the change of dot radius and incident optical intensity effects the peak positions and amplitudes of linear and nonlinear absorption coefficients. Besides, it has been found that the absorption coefficients of transitions between triplet states are stronger than those of the singlet states, and also triplet absorption transitions occur at higher energies. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：88 / 93

页数：6

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