Tuning of nonlinear optical characteristics of a cylindrical quantum dot by external fields and structure parameters

Jaouane, M.; Sali, A.; Kasapoğlu, E.; Ungan, F.

doi:10.1080/14786435.2023.2171499

Cited by 6 publications

(2 citation statements)

References 48 publications

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“…The quantum confinement that occurs the low dimensional system, quantum well [1,2], quantum wire [3] and QDs [4] exhibited new properties, especially the QD that has natural atomic-like discrete energy levels . Their physical properties can be controlled and adjusted by changing their size and composition, in addition to a variety of shapes which can be approximated as spherical [5,6], ring [7], cubic [8,9], cylindrical [10,11], pyramid [12] and ellipsoidal [13]. The QDs have drawn the attention by many researchers in both experimental and theoretical fields [14].…”

Section: Introductionmentioning

confidence: 99%

The nonlinear optical properties of self-assembled InAs/GaAs quantum dot under effect of temperature and hydrostatic pressure

Jaouane

El-Bakkari

et al. 2023

Preprint

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In this study, we have scrutinized the influences of the temperature \(\left(T\right)\) and hydrostatic pressure \(\left(P\right)\) on the nonlinear and linear optical properties of a core/shell quantum dot (QD) system with Screened Modified Kratzer potential (SMKP). To realize this goal, we have examined the energy levels and their associated wave functions using the diagonalization method within the effective mass approximation. Analytical terms for absorption coefficients (ACs) and relative refractive index changes (RRICs) are exploited by means of the density matrix approach. The numerical outcomes are offered for typical InAs/GaAs core/shell QD system. The dependency of SMKP, dipole transition matrix element and electron energies of the ground (\(1s\)) and first excited state (\(1p\)) on the \(P\) and \(T\) that are varied over a range. Obtained numerical calculation results revealed that the \(P\) and \(T\) impacts the magnitude and position of the resonant peaks that characterize the ACs and RRICs.

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Section: Introductionmentioning

confidence: 99%

The nonlinear optical properties of self-assembled InAs/GaAs quantum dot under effect of temperature and hydrostatic pressure

Jaouane

El-Bakkari

et al. 2023

Preprint

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“…In consequence, studies on impurity doped low‐dimensional semiconductor nanostructures have been widely explored [ 2–16 ] with special thrust on their NLO properties. [ 17–41 ]…”

Section: Introductionmentioning

confidence: 99%

Role of Spatial Impurity Spread on the Transition Dynamics of Doped GaAs Quantum Dot in Presence of Noise

Datta,

Bhakti,

Ghosh

2023

Physica Status Solidi (b)

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Present enquiry thoroughly explores the time‐average population transfer rate (TAPTR) of impurity doped GaAs quantum dot (QD) pursuing the change in the spatial impurity spread (SIS). The said excitation rate has been studied under the supervision of Gaussian white noise (GWN). The promotion of the ground state electronic density takes place due to different types of time‐changing fluctuations viz. simple sinusoidal field, time‐dependent confinement potential and time‐dependent magnetic field. GWN couples with the QD by additive and multiplicative modes. The work examines the joint influence of SIS, GWN and its pathway of inclusion and the nature of the time‐dependent perturbations on the attributes of the TAPTR. The TAPTR curves are composed of steadfast rise, steadfast diminish, maximization (relevant to generation of large nonlinear optical properties), minimization and saturation (suggesting dynamic freezing). The findings elucidate the means of fine‐tuning the TAPTR among the doped GaAs QD eigenstates in presence of noise, when the SIS undergoes a gradual change.This article is protected by copyright. All rights reserved.

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Hydrogenic donor-related binding energy and diamagnetic susceptibility in multilayer cylindrical quantum dots under hydrostatic pressure

et al. 2023

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Tuning of nonlinear optical characteristics of a cylindrical quantum dot by external fields and structure parameters

Cited by 6 publications

References 48 publications

The nonlinear optical properties of self-assembled InAs/GaAs quantum dot under effect of temperature and hydrostatic pressure

The nonlinear optical properties of self-assembled InAs/GaAs quantum dot under effect of temperature and hydrostatic pressure

Role of Spatial Impurity Spread on the Transition Dynamics of Doped GaAs Quantum Dot in Presence of Noise

Hydrogenic donor-related binding energy and diamagnetic susceptibility in multilayer cylindrical quantum dots under hydrostatic pressure

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