Optical properties of an elliptic quantum ring: Eccentricity and electric field effects

D Bejan, C Stan, EC Niculescu - Optical Materials, 2018 - Elsevier
We have theoretically studied the electronic and optical properties of a GaAs/AlGaAs elliptic
quantum ring under in-plane electric field. The effects of an eccentric internal barrier-placed …

Impurity related optical properties in tuned quantum dot/ring systems

S Pal, M Ghosh, CA Duque - Philosophical Magazine, 2019 - Taylor & Francis
In this paper, we explore the linear, third-order nonlinear, and total optical absorption
coefficient (OAC) and refractive index change coefficient (RICC) of a GaAs doped quantum …

Impurity and eccentricity effects on the nonlinear optical rectification in a quantum ring under lateral electric fields

EC Niculescu, C Stan, D Bejan… - Journal of Applied Physics, 2017 - pubs.aip.org
Within the framework of the effective-mass approximation, the effect of different static
perturbations—lateral electric field, impurity donor, and eccentricity distortion—on the …

Effects of hydrogenic impurity and external fields on the optical absorption in a ring-shaped elliptical quantum dot

S Ghajarpour-Nobandegani, MJ Karimi - Optical Materials, 2018 - Elsevier
In this work, the effects of the hydrogenic impurity, electric and magnetic fields on the optical
absorption of a typical G a A s/A l G a A s ring-shaped elliptical quantum dot are …

Tuning of nonlinear optical characteristics of Mathieu quantum dot by laser and electric field

MK Bahar, P Başer - The European Physical Journal Plus, 2022 - Springer
In this work, for the first time, the total refractive index (TRICs) and total absorption
coefficients (TACs) of In x Ga 1-x As/GaAs Mathieu quantum dot (MQD) with hydrogenic …

Rashba effect on linear and nonlinear optical properties of a cylindrical core/shell heterojunction quantum dot

M Kria, VV Nautiyal, K Lakaal, J El Hamdaoui… - Frontiers in …, 2022 - frontiersin.org
Rashba effect may play an important role in the nonlinear optical properties of
heterojunction quantum dots. In this work, we have theoretically examined the effects of …

Electronic and optical properties of eccentric quantum ring under parallel magnetic field

D Nasri - Physica B: Condensed Matter, 2021 - Elsevier
Using the effective mass approximation, within the plane wave expansion, the effect of in-
plane magnetic field on the electronic states and the intersubband optical absorption in a …

Aharonov-Bohm effect in pseudo-elliptic quantum rings: influence of geometry, eccentricity and electric field

D Bejan, C Stan - The European Physical Journal Plus, 2019 - Springer
We theoretically investigated the influence of shape, structural distortion and electric field on
the Aharonov-Bohm (AB) oscillations observed in the energy and in the nonlinear …

Studies on the third-harmonic generations in a quantum ring with magnetic field

C Chang - The European Physical Journal Plus, 2023 - Springer
The influence of temperature and hydrostatic pressure on the third-harmonic generation
(THG) coefficient of the tuned quantum ring is studied theoretically. We derive the …

[HTML][HTML] Donor impurity-related nonlinear optical rectification in a two-dimensional quantum ring under magnetic field

D Bejan - Physics Letters A, 2017 - Elsevier
An investigation of the nonlinear optical rectification of a GaAs two-dimensional disc-shaped
quantum ring with an off-center donor impurity under magnetic field has been performed by …