Noise-driven optical absorption coefficients of impurity doped quantum dots

Ganguly, Jayanta; Saha, Surajit; Pal, Suvajit; Ghosh, Manas

doi:10.1016/j.physe.2015.09.027

Cited by 18 publications

(3 citation statements)

References 59 publications

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“…The analytical forms of the linear and third-order nonlinear [31] optical AC are then given by [32][33][34][35] α ð1Þ ðωÞ ¼ ω…”

Section: Theorymentioning

confidence: 99%

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Nonlinear Optical Properties of Al_0.3Ga_0.7As/GaAs Quantum Dots under Tunable Parameters

Wang

2023

Physica Status Solidi (b)

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The nonlinear optical properties of quantum dots under multidimensional confinement potential are investigated. In the framework of the effective mass approximation, the analytical formula of the optical absorption coefficient in the quantum dots is derived using the density matrix method and the iterative procedure, and the numerical results of typical Al0.3Ga0.7 As/GaAs material are calculated. Through calculation and numerical fitting, it is found that increasing temperature and the depth of limiting potential will give rise to the absorption peak to move to the high‐energy region commonly referred to as the blueshift, within a certain range of parameter variations. While reducing the range of limiting potential, quantum dot radius and the hydrostatic pressure can achieve the same effect. It is important to emphasize that variations in hydrostatic pressure and the depth of the limiting potential result in significant changes to the peak value of the optical absorption coefficient. The research results have a certain guiding significance for further study of the optical properties of quantum dots under multidimensional confinement potential and their application in practical production.

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“…The analytical forms of the linear and third-order nonlinear [31] optical AC are then given by [32][33][34][35] α ð1Þ ðωÞ ¼ ω…”

Section: Theorymentioning

confidence: 99%

“…The analytical forms of the linear and third‐order nonlinear [ 31 ] optical AC are then given by [ 32–35 ]

$$\left(\alpha\right)^{\left(\right. 1 \left.\right)} \left(\right.

…”

Section: Theorymentioning

confidence: 99%

Nonlinear Optical Properties of Al_0.3Ga_0.7As/GaAs Quantum Dots under Tunable Parameters

Wang

2023

Physica Status Solidi (b)

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“…Effect of a tilted electric field on optical absorption of quantum wires has also been reported on [15]. The effect of noise on optical properties of impurity doped quantum dots has also been comprehensively studied [16][17][18]. Another way of manipulating optical properties is through spatially variant confining electric potentials, for example, the Tietz potential [19], potential steps [20], power exponential potential [21], and the inverse parabolic potential [22].…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of GaAs Nanowires with an Electric Potential That Varies Inversely with the Square of the Radial Distance

Tshipa

2019

Advances in Condensed Matter Physics

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A theoretical investigation of optical properties of a cylindrical quantum wire (CQW) is presented. The properties studied were optical absorption coefficient (AC) and change in refractive index (CRI) of the quantum wire. In particular, effect of an inverse parabolic potential on the optical properties of CQWs was investigated. This was done by solving the Schrödinger equation within the effective mass approximation to obtain the wave functions. The inverse parabolic potential reduces transition energies and therefore redshifts peaks of the AC, as well as the anomalous dispersion region of the dependence of change in refractive index on the photon energy. The inverse parabolic potential also has effect on the magnitudes of these optical quantities, reducing the AC and enhancing the CRI. These properties of the inverse parabolic confining electric potential can have a wide range of applications in nanodevice technology, some details of which are discussed.

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Energy levels and far-infrared optical absorption of impurity doped semiconductor nanorings: Intense laser and electric fields effects

Barseghyan

2016

Chemical Physics

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Noise-driven optical absorption coefficients of impurity doped quantum dots

Cited by 18 publications

References 59 publications

Nonlinear Optical Properties of Al_0.3Ga_0.7As/GaAs Quantum Dots under Tunable Parameters

Nonlinear Optical Properties of Al_0.3Ga_0.7As/GaAs Quantum Dots under Tunable Parameters

Optical Properties of GaAs Nanowires with an Electric Potential That Varies Inversely with the Square of the Radial Distance

Energy levels and far-infrared optical absorption of impurity doped semiconductor nanorings: Intense laser and electric fields effects

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Noise-driven optical absorption coefficients of impurity doped quantum dots

Cited by 18 publications

References 59 publications

Nonlinear Optical Properties of Al0.3Ga0.7As/GaAs Quantum Dots under Tunable Parameters

Nonlinear Optical Properties of Al0.3Ga0.7As/GaAs Quantum Dots under Tunable Parameters

Optical Properties of GaAs Nanowires with an Electric Potential That Varies Inversely with the Square of the Radial Distance

Energy levels and far-infrared optical absorption of impurity doped semiconductor nanorings: Intense laser and electric fields effects

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Nonlinear Optical Properties of Al_0.3Ga_0.7As/GaAs Quantum Dots under Tunable Parameters

Nonlinear Optical Properties of Al_0.3Ga_0.7As/GaAs Quantum Dots under Tunable Parameters