Calculation of linear and nonlinear optical properties of spherical quantum dots with Hulthen plus Hellmann confining potential

被引：3
|
作者：
Duan, Yiming [1 ]
Li, Xuechao [1 ]
Chang, Ceng [1 ]
Zhao, Zhuang [1 ]
机构：
[1] Anhui Univ Sci & Technol, Sch Mech & Optoelect Phys, Huainan 232001, Peoples R China
来源：
OPTIK | 2022年 / 261卷
基金：
中国国家自然科学基金;
关键词：
Optical absorption coefficients; Refractive index changes; Hulth?n plus Hellmann potential; Structural parameters; REFRACTIVE-INDEX CHANGES; ABSORPTION-COEFFICIENTS; HYDROSTATIC-PRESSURE; RECTIFICATION; IMPURITY; WELLS;
D O I：
10.1016/j.ijleo.2022.169187
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The optical absorption coefficients (OACs) and refractive index changes (RICs) in the GaAs/Ga1-x AlxAs spherical quantum dots (QDs) under Hulthen plus Hellmann confining potential have been investigated by adjusting the structural parameters with the applied tuning elements. Energy levels and wavefunctions of this system have been determined by means of the Nikiforov- Uvarov (NU) method. Expressions for the OACs and RICs are derived by the density matrix method. We display that both the radius of QDs and the depth of the Hulthen plus Hellmann confining potential have a significant impact on OACs and RICs. Furthermore, we can draw conclusions that the applied tuning elements can manage the amplitudes and resonances frequency of the OACs and RICs.
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页数：8
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