Theoretical modeling of nonlinear optical properties in spheroidal CdTe/ZnTe core/shell quantum dot embedded in various dielectric matrices
- Resource Type
- article
- Authors
- S. Hértilli; N. Yahyaoui; N. Zeiri; P. Baser; M. Said; S. Saadaoui
- Source
- Results in Physics, Vol 56, Iss , Pp 107274- (2024)
- Subject
- Nonlinear optic
Spheroid CSQDs
Intersubband transition
TON susceptibility
Dielectric matrices
Physics
QC1-999
- Language
- English
- ISSN
- 2211-3797
The theoretical investigation of the electronic and nonlinear optical properties in spheroid-shaped CdTe/ZnTe core/shell quantum dots (CSQDs) embedded into two commonly adopted dielectric matrices (PVA, SiO2) is done in the framework of the Effective Mass Approximation (EMA). The discrete intra-band confined energy levels and their matching wave functions were calculated by solving the stationary Schrödinger equation taking into account the Compact Density Matrix (CDM) approach. The effect of the dielectric mismatch between the system and the capped matrix has been studied and discussed. Our numerical results revealed that the third-order nonlinear (TON) optical susceptibility χ3 is strongly influenced by the geometrical parameters and the dielectric environment.