Second-harmonic generation in asymmetric quantum dots in the presence of a static magnetic field

The second-harmonic generation （SHG） coefficient in an asymmetric quantum dot （QD） with a static magnetic field is theoretically investigated. Within the framework of the effective-mass approximation, we obtain the confined wave functions and energies of electrons in the QD. We also obtain the SHC c...

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Bibliographic Details
Published inChinese physics B Vol. 21; no. 8; pp. 449 - 452
Main Author 李学超 王安民 王兆亮 杨阳
Format Journal Article
LanguageEnglish
Published 01.08.2012
Subjects
AlGaAs
Aluminum gallium arsenides
Approximation
Asymmetry
Coefficients
Magnetic fields
Mathematical analysis
Mathematical models
Quantum dots
Wave functions
二次谐波产生
密度矩阵
有效质量
迭代方法
量子点
静磁场
非对称
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Summary:The second-harmonic generation （SHG） coefficient in an asymmetric quantum dot （QD） with a static magnetic field is theoretically investigated. Within the framework of the effective-mass approximation, we obtain the confined wave functions and energies of electrons in the QD. We also obtain the SHC coefficient by the compact-density-matrix approach and the iterative method. The numerical results for the typical GaAs/AlGaAs QD show that the SHC coefficient depends strongly on the magnitude of magnetic field, parameters of the asymmetric potential and the radius of the QD. The resonant peak shifts with the magnetic field or the radius of the QD changing.
Bibliography:The second-harmonic generation （SHG） coefficient in an asymmetric quantum dot （QD） with a static magnetic field is theoretically investigated. Within the framework of the effective-mass approximation, we obtain the confined wave functions and energies of electrons in the QD. We also obtain the SHC coefficient by the compact-density-matrix approach and the iterative method. The numerical results for the typical GaAs/AlGaAs QD show that the SHC coefficient depends strongly on the magnitude of magnetic field, parameters of the asymmetric potential and the radius of the QD. The resonant peak shifts with the magnetic field or the radius of the QD changing.
11-5639/O4
quantum dot, nonlinear optical rectification, magnetic field
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/8/087303