Nonlinear optical rectification of GaAs/Ga_(1-x)Al_(x)As quantum dots with Hulthén plus Hellmann confining potential  

作　　者：段一名 李学超 Yi-Ming Duan;Xue-Chao Li(School of Mechanics and Optoelectronics Physics,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]School of Mechanics and Optoelectronics Physics,Anhui University of Science and Technology,Huainan 232001,China

出　　处：《Chinese Physics B》2023年第1期454-457,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.51702003,61775087,11674312,52174161,and 12174161)。

摘　　要：We investigate the nonlinear optical rectification(NOR) of spherical quantum dots(QDs) under Hulthén plus Hellmann confining potential with the external tuning elements. Energy and wavefunction are determined by using the Nikiforov–Uvarov method. Expression for the NOR coefficient is derived by the density matrix theory. The results show that the applied external elements and internal parameters of this system have a strong influence on intraband nonlinear optical properties. It is hopeful that this tuning of the nonlinear optical properties of GaAs/Ga_(1-x)Al_(x)As QDs can make a greater contribution to preparation of new functional optical devices.

关 键 词：nonlinear optical rectification quantum dots Hulthén plus Hellmann potential Nikiforov–Uvarov method 

分 类 号：O431.2[机械工程—光学工程]