Effect of the shape of quantum dots on the refractive index changes

2016 ◽  
Vol 502 ◽  
pp. 146-150 ◽  
Author(s):  
Keyin Li ◽  
Kangxian Guo ◽  
Litao Liang
Keyword(s):  
Quantum Dots ◽  
Refractive Index ◽  
Index Changes

scholarly journals Linear and Nonlinear Intersubband Optical Properties of Direct Band Gap GeSn Quantum Dots

Nanomaterials ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 124 ◽  
Author(s):  
Mourad Baira ◽  
Bassem Salem ◽  
Niyaz Madhar ◽  
Bouraoui Ilahi
Keyword(s):  
Quantum Dots ◽  
Refractive Index ◽  
Absorption Coefficient ◽  
Electron Energy ◽  
Energy State ◽  
Total Absorption ◽  
Absorption Coefficients ◽  
Third Order ◽  
Index Changes ◽  
Total Absorption Coefficient

Intersubband optical transitions, refractive index changes, and absorption coefficients are numerically driven for direct bandgap strained GeSn/Ge quantum dots. The linear, third-order nonlinear and total, absorption coefficients and refractive index changes are evaluated over useful dot sizes’ range ensuring p-like Γ-electron energy state to be lower than s-like L-electron energy state. The results show strong dependence of the total absorption coefficient and refractive index changes on the quantum dot sizes. The third order nonlinear contribution is found to be sensitive to the incident light intensity affecting both total absorption coefficient and refractive index changes, especially for larger dot sizes.

Modulation of surface plasmon wave by photo-induced refractive index changes of CdSe quantum dots

2012 ◽  
Vol 100 (1) ◽  
pp. 011102 ◽  
Author(s):  
Horng-Shyang Chen ◽  
Jyh-Yang Wang ◽  
Sheng-Shiuan Yeh ◽  
Chii-Dong Chen ◽  
Hung-Yi Lin
Keyword(s):  
Quantum Dots ◽  
Refractive Index ◽  
Surface Plasmon ◽  
Cdse Quantum Dots ◽  
Surface Plasmon Wave ◽  
Index Changes ◽  
Plasmon Wave
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