Refractive index changes of multi-layered spherical nanostructures with donor impurity

TL;DR

This paper investigates how the refractive index of multi-layered quantum nanostructures with impurities varies with geometry and optical intensity, revealing significant differences between quantum dots and anti-dots.

Contribution

It provides a detailed numerical analysis of RI changes in MLQDs and MLQAD with impurities, highlighting the effects of geometrical parameters and incident photon energy.

Findings

RI changes are highly sensitive to system geometry and optical intensity

MLQAD models exhibit higher RIs than MLQD models

Refractive index curves differ significantly with photon energy

Abstract

In this study, the linear, third-order nonlinear and total refractive index (RI) changes of multi-layered quantum dot (MLQD) and multi-layered quantum anti-dot (MLQAD) with a hydrogenic impurity are calculated. Our numerical results indicate that the RI changes are considerably sensitive to the geometrical parameters of systems and the incident optical intensity. It is observed that by changing the incident photon energy, the RI curves corresponding to MLQAD and MLQD are considerably different in shapes and behaviors. Generally, our results show that MLQAD models have very higher RIs than MLQD models.