Intersubband optical absorption coefficient changes and refractive index changes in a two-dimensional quantum pseudodot system

被引：127

作者：

Rezaei, G. ^{[1
]}

Vaseghi, B. ^{[1
]}

Taghizadeh, F. ^{[1
]}

Vahdani, M. R. K. ^{[2
]}

Karimi, M. J. ^{[3
]}

机构：

[1] Univ Yasuj, Dept Phys, Coll Sci, Yasuj 75914353, Iran

[2] Shiraz Univ, Dept Phys, Coll Sci, Shiraz 71454, Iran

[3] Shiraz Univ Technol, Dept Phys, Coll Sci, Shiraz 71555313, Iran

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2010年 / 48卷 / 05期

关键词：

Quantum pseudodot; Pseudoharmonic potential; Nonlinear optical properties; Magnetic field; HYDROGENIC DONOR; BINDING-ENERGY; DOT; FIELD;

D O I：

10.1016/j.spmi.2010.08.009

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The optical absorption coefficient changes and refractive index changes associated with intersubband transitions in a two-dimensional quantum pseudodot system under the influence of a uniform magnetic field are theoretically investigated In this regard the electronic structure of the pseudodot system is studied using the one-band effective mass theory and by means of the compact density matrix approach linear and nonlinear optical absorption coefficient and refractive index changes are calculated The effects of an external magnetic field and the geometrical size of the pseudodot system on the optical absorption coefficient and refractive index changes are investigated It is found that the absorption coefficient and refractive index changes are strongly affected not only by an external magnetic field but also by the geometrical size of the pseudodot system (C) 2010 Elsevier Ltd All rights reserved

引用

页码：450 / 457

页数：8

共 24 条

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