Theoretical studies on the optical absorption coefficients and refractive index changes in parabolic quantum dots in the presence of electric and magnetic fields

被引：83

作者：

Zhang, Zhi-Hai ^{[1
]}

Guo, Kang-Xian ^{[1
]}

Chen, Bin ^{[1
]}

Wang, Rui-Zhen ^{[1
]}

Kang, Min-Wu ^{[1
]}

Shao, Shuai ^{[1
]}

机构：

[1] Guangzhou Univ, Coll Phys & Elect Engn, Dept Phys, Guangzhou 510006, Guangdong, Peoples R China

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2010年 / 47卷 / 02期

关键词：

Optical absorption coefficient; Refractive index change; Electric field; Density matrix approach; WELLS; RECTIFICATION; TRANSITIONS; GENERATION; WIRES;

D O I：

10.1016/j.spmi.2009.12.004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The optical absorption coefficients and the changes in the refractive index in GaAs/AlGaAs parabolic quantum dots(QDs) with applied electric and magnetic fields are studied in detail. Analytical expressions for the linear and nonlinear intersubband absorption coefficients and refractive index changes are obtained by using a compact density matrix approach and an iterative procedure. Finally, the calculated results show the incident optical intensity, the frequencies of the confined potential of the QDs and the applied electric and magnetic fields have a great influence on the optical absorption coefficients and refractive index changes in this system. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：325 / 334

页数：10

共 24 条

[1] Role of the attractive intersite interaction in the extended Hubbard model [J].

Mancini, F. ;

Mancini, F. P. ;

Naddeo, A. .

EUROPEAN PHYSICAL JOURNAL B, 2009, 68 (03) :309-315

[2] Optical second harmonic generation in asymmetric double triangular quantum wells [J].

Chen, Bin ;

Guo, Kang-Xian ;

Wang, Rui-Zhen ;

Zhang, Zhi-Hai .

SUPERLATTICES AND MICROSTRUCTURES, 2009, 45 (03) :125-133

[3] Second-order nonlinear optical susceptibilities in asymmetric coupled quantum wells [J].

Chen, Bin ;

Guo, Kang-Xian ;

Liu, Zuo-Lian ;

Wang, Rui-Zhen ;

Zheng, Yun-Bao ;

Li, Bin .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (25)

[4]

Cho A. Y., 1975, Progress in Solid State Chemistry, V10, P157, DOI 10.1016/0079-6786(75)90005-9

[5] OPTICAL-TRANSITIONS IN A PARABOLIC QUANTUM WELL WITH AN APPLIED ELECTRIC-FIELD - ANALYTICAL SOLUTIONS [J].

CHUANG, SL ;

AHN, D .

JOURNAL OF APPLIED PHYSICS, 1989, 65 (07) :2822-2826

[6] METALORGANIC CHEMICAL VAPOR-DEPOSITION [J].

DAPKUS, PD .

ANNUAL REVIEW OF MATERIALS SCIENCE, 1982, 12 :243-269

[7]

Darwin CG, 1931, P CAMB PHILOS SOC, V27, P86

[8]

EFROS AL, 1982, SOV PHYS SEMICOND+, V16, P772

[9] OBSERVATION OF EXTREMELY LARGE QUADRATIC SUSCEPTIBILITY AT 9.6-10.8-MU-M IN ELECTRIC-FIELD-BIASED ALGAAS QUANTUM WELLS [J].

FEJER, MM ;

YOO, SJB ;

BYER, RL ;

HARWIT, A ;

HARRIS, JS .

PHYSICAL REVIEW LETTERS, 1989, 62 (09) :1041-1044

[10] Note to the Quantification of the harmonic Oscillator in a Magnetic Field [J].

Fock, V. .

ZEITSCHRIFT FUR PHYSIK, 1928, 47 (5-6) :446-448

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