Optical third-harmonic generation of spherical quantum dots under inversely quadratic Hellmann plus inversely quadratic potential  

作　　者：Xing Wang Xuechao Li 

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

出　　处：《Communications in Theoretical Physics》2024年第9期158-163,共6页理论物理通讯（英文版）

基　　金：National Natural Science Foundation of China(Grant Nos.11674312,52174161,51702003,12174161 and 61775087);Anhui University of Science and Technology(Grant No.2023CX2141)。

摘　　要：The third-harmonic generation(THG)coefficient for a spherical quantum dot system with inversely quadratic Hellmann plus inversely quadratic potential is investigated theoretically,considering the regulation of quantum size,confinement potential depth and the external environment.The numerical simulation results indicate that the THG coefficient can reach the order of 10~(-12)m~2V~(-2),which strongly relies on the tunable factor,with its resonant peak experiencing a redshift or blueshift.Interestingly,the effect of temperature on the THG coefficient in terms of peak location and size is consistent with the quantum dot radius but contrasts with the hydrostatic pressure.Thus,it is crucial to focus on the influence of internal and external parameters on nonlinear optical effects,and to implement the theory in practical experiments and the manufacture of optoelectronic devices.

关 键 词：nonlinear optical effects quantum dot inversely quadratic hellmann potential inversely quadratic potential third harmonic generation coefficient 

分 类 号：O471.1[理学—半导体物理]