Linear And Nonlinear Intersubband Optical Absorptions In Multiple Quantum Wells Under The External Fields
Journal Title: Cumhuriyet Science journal - Year 2019, Vol 40, Issue 3
Abstract
In this study, the effects of the external fields (electric and tilted magnetic fields) and well parameters on the optical absorption coefficients in GaAs/GaAlAs multiple (five) quantum wells under the applied electric and tilted magnetic fields has been investigated theoretically. Firstly, the energy eigenvalues and eigen functions of an electron confined in multiple quantum wells are calculated by analytically from Schrödinger equation using the transfer matrix method within the effective mass approximation, Secondly, the linear, nonlinear and total intersubband optical absorptions in GaAs/GaAlAs multiple quantum wells system are studied within the compact density-matrix approach. It is shown that the parameters such as strenghts of the external fields and θ-tilted angle values not only shift the peak positions in absorption spectrum but also considerably modify their potential heights. In generally, electronic and optical properties of the quantum wells are very sensitive to the applied external fields and well parameters. Therefore, we can conclude that the effect of the external fields can be used to tune and control the optical properties of interest in the range of the far-infrared electromagnetic spectrum.
Authors and Affiliations
Rana Özbakır
Keywords
Related Articles
- EP ID EP663173
- DOI 10.17776/csj.556155
- Views 44
- Downloads 0
Investigation of Antitumor and Antibacterial Properties of Some New Thiophene-2,5-Dicarboxylic Acid bis-aryl (alkyl) amide Compounds
Thiophene-derived compounds are of interest in chemistry, biology and pharmacology because of their various pharmacological activities This study aims to investigate the antitumor and antibacterial activity of thiophene-...
A New Spherical Catalyst For Hydrogen Evolution Reaction
CuFeZn composite catalysts have been prepared on the graphite electrode by electrochemical deposition as electrocatalytic materials for hydrogen evolution reaction (HER). The etching process was applied on catalysts in c...
A Strongly Ill-Posed Problem for the Equation
In this work, we consider an inverse problem for an elliptic equation which is strongly ill-posed in Hadamard sense. We prove the uniqueness of the solution of the problem by using Carleman estimates.
The Effect of Polymer Structures on Polymer Stabilized Blue Phase Liquid Crystals
In the present work, the effects of polymer structures on blue phase liquid crystals were carried out. Blue-phase liquid crystal samples with wide temperature range including room temperature were obtained by means of th...
Some Congruences for Sums Involving Harmonic Numbers
In this paper, we establish some congruences involving sums with harmonic numbers and the terms of second-order linear sequences.