Mathematical Modelling and Engineering Problems

Effects of the Magnetic Field and Thickness of Layers on Intersubband Absorption in Asymmetric Double Parabolic Quantum Wells

Djamel Sebbar, Bouzid Boudjema, Abdelali Boukaoud, Younes Chiba

Published Aug 30, 2023• 1 citation

Abstract

This numerical study scrutinizes the impact of both the thickness of layers and an externally applied magnetic field on the optical absorption coefficient and alterations in the refractive index pertaining to the intersubband optical transition (1-2) within an asymmetric double parabolic structure, utilizing GaAs/AlGaAs quantum wells as a basis.Energy levels and their corresponding wave functions have been ascertained through the use of the shooting method.The findings of this investigation suggest a pronounced sensitivity of the optical absorption coefficient and changes in the refractive index to the thickness of the layers and the applied external magnetic field.It has been observed that the intensification of the magnetic field results in a resonant peak position shifting towards higher energy values, whereas the thickness of the layers exerts an influence on the resonance peak magnitude.The insights derived from this study hold considerable potential for application, particularly in the development of optical devices predicated on intersubband electronic transitions.

DOI: 10.18280/mmep.100433

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