Exploring optical refractive index change of impurity doped quantum dots driven by white noise

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

doi:10.1016/j.spmi.2015.10.021

Cited by 19 publications

(4 citation statements)

References 57 publications

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“…Another interesting method is the method of obtaining variations in the refractive index in the volume of a material by means of induced migration of quantum dots 14 . In 14 , the results of studies of the nature of the change in the total (macroscopic) refractive index of an optical medium doped with quantum dot impurities are presented.…”

Section: Analysis Of Known Approaches To the Practical Implementation...mentioning

confidence: 99%

On the problem of forming a 3D refractive index profile in a fiber and compatible components and possible solutions

Vinogradova,

Meshkov,

Gizatulin

et al. 2023

Optical Technologies for Telecommunications 2022

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The article is devoted to the study of issues related to the developments of methods for manufacturing 3D refractive index profiled fiber and fiber-compatible structures. Based on the results of the analysis of published works, it was established that there are no tested approaches with generality to solving this problem. Therefore, the method proposed by the authors seems relevant, which can be classified as a technique for bulk transformation of material properties, which makes it possible to approximately select, and then adjust (with refinement) the volumetric refractive index profile of the selected area to the simulated value. In this article, the authors present the results of the formation of a guiding structure along the boundary of a profiled area. The method of three-beam UV burning and the method of focused ion burning were studied. It has been found that in the second case, significant differences in the refractive index can be obtained. Therefore, the second method may be of interest for the manufacture of large-sized components.

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Section: Analysis Of Known Approaches To the Practical Implementation...mentioning

confidence: 99%

On the problem of forming a 3D refractive index profile in a fiber and compatible components and possible solutions

Vinogradova,

Meshkov,

Gizatulin

et al. 2023

Optical Technologies for Telecommunications 2022

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“…These properties are relevant to some practical optoelectronic applications, including the development of photonic devices, optical switches, and communication systems. So, investigation of these coefficients for QW structures becomes of high interest in the field of optics and photonics [18,19]. The second harmonic generation (SHG) susceptibility is indeed one of the most studied nonlinear-optical properties since it is thought to be the lowest-order nonlinear effect, and has a relatively large amplitude in comparison to the other highest orders where the symmetry of the structure is broken.…”

Section: Introductionmentioning

confidence: 99%

Hydrostatic pressure and temperature effects on nonlinear optical properties in harmonic-Gaussian asymmetric double quantum wells

Sayrac,

Dakhlaoui,

Mora-Ramos

et al. 2024

Phys. Scr.

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The paper examines the linear and non-linear optical characteristics of an electron in harmonic Gaussian asymmetrical double quantum wells, taking into account thermodynamic variables such as temperature and hydrostatic pressure. Numerical calculations by considering the effective mass and parabolic band approximation are performed. The electron contained within an asymmetric double well generated by the sum of a parabolic and Gaussian potential has its eigenvalues and eigenfunctions determined using the diagonalization approach. For nonlinear optical coefficients, the density matrix expansion is used. Wavefunctions and energy levels vary as an effect of the applied fields. In harmonic Gaussian asymmetrical double quantum wells, the total optical absorption coefficient (TOAC), the relative refractive index changes (RRIC), and second harmonic generation (SHG) have all been theoretically investigated. The magnitude and position of the resonant peaks are significantly influenced by the temperature effects. With controllable coupling and externally applied hydrostatic pressure and temperature, the potential model presented in this study can be used to simulate and manipulate the optical and electronic properties of the asymmetric double-quantum heterostructures, such as double quantum dots and wells.

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“…The obtained results show that the amplitude of photoioniz ation cross-section grows as the dot radius increases and the peak of the cross-section blue shifts with the laser intensity increment. Finally, the effect of noise on the electronic and optical properties of QDs has been studied theoretically by many researchers [40][41][42]. Although there are numerous studies on this subject, as far as we know, there are no theor etical studies on the ILF dependency of the bound energy levels and impurity binding energy in a cylindrical QD with δ-doped axial potential.…”

Section: Introductionmentioning

confidence: 99%

Hydrogenic donor impurities in $\delta$ -doped cylindrical quantum dots under intense laser field

et al. 2019

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A theoretical study of the effects of non-resonant intense laser field on the donor impurity binding energy in a cylindrical quantum dot with δ-doped axial potential is performed in the framework of the effective mass approximation. The obtained results indicate that, 2D impurity concentration and intense laser field intensity have a significant effect on the impurity binding energy and energy levels of electrons in the cylindrical quantum dots with δ-type axial potential.

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Exploring optical refractive index change of impurity doped quantum dots driven by white noise

Cited by 19 publications

References 57 publications

On the problem of forming a 3D refractive index profile in a fiber and compatible components and possible solutions

On the problem of forming a 3D refractive index profile in a fiber and compatible components and possible solutions

Hydrostatic pressure and temperature effects on nonlinear optical properties in harmonic-Gaussian asymmetric double quantum wells

Hydrogenic donor impurities in $\delta$ -doped cylindrical quantum dots under intense laser field

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