Optical properties of Al_(x)Ga_(1-x)As/GaAs Woods-Saxon quantum well in the presence of hydrostatic pressure and applied electric field  

作　　者：Zhi-Hai Zhang Yi-Sheng Shi Jian-Hui Yuan 

机构地区：[1]School of Physics and Electronics,Yancheng Teachers University,Yancheng 224002,China [2]Intelligent photoelectric device and measurement engineering research center,Yancheng Teachers University,Yancheng 224002,China [3]The Laboratory of Biomedical Photonics and Engineering,Guangxi Medical University,Nanning 530021,China

出　　处：《Communications in Theoretical Physics》2022年第6期143-151,共9页理论物理通讯（英文版）

基　　金：Project supported by the National Natural Science Foundations of China(No.51971193)。

摘　　要：The third harmonic generation(THG),linear and nonlinear optical absorption coefficients(OACs),and refractive index changes(RICs)are investigated in a Woods-Saxon quantum well(QW)modulated by the hydrostatic pressure and applied electric field.The effect of non-uniform aluminum doping(position-dependent effective mass(PDEM))on the mass of the system is discussed,and further to explore the influence of PDEM on the nonlinear THG,OACs,and RICs of the Woods-Saxon QW.These nonlinear optical properties above are obtained using the compact-density matrix formalism.The electron states in a Woods-Saxon QW under the constant effective mass(CEM)and PDEM are calculated by solving the Schr?dinger equation via the finite difference technique.The contributions from competing effects of the hydrostatic pressure and applied electric field to the nonlinear optical properties with CEM and PDEM are reported,as well as the comparison with each other.The observations reveal that the regulation of external fields and the influence of PDEM play an important role in the photoelectric properties of QW.

关 键 词：optical properties position dependent effective mass hydrostatic pressure electric field 

分 类 号：O431.2[机械工程—光学工程]