Third-order nonlinear optical susceptibility and photoionization of an exciton in quantum dots

被引：13

作者：

Xie, Wenfang ^{[1
]}

机构：

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

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2013年 / 56卷

基金：

中国国家自然科学基金;

关键词：

Quantum dot; Exciton; Third-order susceptibility; BINDING-ENERGY; ELECTRIC-FIELD; CROSS-SECTION; HYDROSTATIC-PRESSURE; MAGNETIC-FIELD; SEMICONDUCTOR MICROCRYSTALLITES; WELL STRUCTURES; DONOR IMPURITY; WIRES; ABSORPTIONS;

D O I：

10.1016/j.spmi.2013.01.002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this study, an investigation of an exciton in a disk-like quantum dot has been carried out by using the matrix diagonalization method and the compact density-matrix approach. The dependences of binding energies of excitons for the light and heavy hole masses on the size of the confining potential are analyzed explicitly. The third-order nonlinear optical susceptibility of third harmonic generation as well as the photoionization cross section has been calculated for the light-hole and heavy-hole excitons. The results are presented as a function of the incident photon energy. The results show that the third-order nonlinear optical susceptibility and the photoionization cross section of an exciton in a quantum dot are strongly affected by the dot size and the hole mass. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：8 / 15

页数：8

共 32 条

[1] ELECTROMAGNETIC RESPONSE OF QUANTUM DOTS [J].

BAKSHI, P ;

BROIDO, DA ;

KEMPA, K .

PHYSICAL REVIEW B, 1990, 42 (12) :7416-7419

[2] Effects of excitons in nonlinear optical rectification in semiparabolic quantum dots [J].

Baskoutas, Sotirios ;

Paspalakis, Emmanuel ;

Terzis, Andreas F. .

PHYSICAL REVIEW B, 2006, 74 (15)

[3] EXCITON BINDING-ENERGY IN QUANTUM WELLS [J].

BASTARD, G ;

MENDEZ, EE ;

CHANG, LL ;

ESAKI, L .

PHYSICAL REVIEW B, 1982, 26 (04) :1974-1979

[4] ELECTRO-ABSORPTION BY STARK-EFFECT ON ROOM-TEMPERATURE EXCITONS IN GAAS/GAALAS MULTIPLE QUANTUM WELL STRUCTURES [J].

CHEMLA, DS ;

DAMEN, TC ;

MILLER, DAB ;

GOSSARD, AC ;

WIEGMANN, W .

APPLIED PHYSICS LETTERS, 1983, 42 (10) :864-866

[5] Binding energy and photoionization cross-section in GaAs quantum well-wires and quantum dots: Magnetic field and hydrostatic pressure effects [J].

Correa, JD ;

Porras-Montenegro, N ;

Duque, CA .

BRAZILIAN JOURNAL OF PHYSICS, 2006, 36 (2A) :387-390

[6] Hydrostatic pressure effects on the donor impurity-related photoionization cross-section in cylindrical-shaped GaAs/GaAlAs quantum well wires [J].

Correa, JD ;

Cepeda-Giraldo, O ;

Porras-Montenegro, N ;

Duque, CA .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2004, 241 (14) :3311-3317

[7] Fine structure splitting in the optical spectra of single GaAs quantum dots [J].

Gammon, D ;

Snow, ES ;

Shanabrook, BV ;

Katzer, DS ;

Park, D .

PHYSICAL REVIEW LETTERS, 1996, 76 (16) :3005-3008

[8] ULTRAVIOLET AND VIOLET LIGHT-EMITTING GAN DIODES GROWN BY LOW-PRESSURE METALORGANIC CHEMICAL VAPOR-DEPOSITION [J].

GOLDENBERG, B ;

ZOOK, JD ;

ULMER, RJ .

APPLIED PHYSICS LETTERS, 1993, 62 (04) :381-383

[9] BINDING-ENERGIES OF WANNIER EXCITONS IN GAAS-GA1-XALXAS QUANTUM WELL STRUCTURES [J].

GREENE, RL ;

BAJAJ, KK .

SOLID STATE COMMUNICATIONS, 1983, 45 (09) :831-835

[10] Photoionization cross section of hydrogenic impurities in cylindrical quantum wires: Finite well model [J].

Ham, Heon ;

Spector, Harold N. .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (02)

← 1 2 3 4 →