Nonlinear optical rectification in parabolic quantum dots in the presence of electric and magnetic fields

Li, Bin; Guo, Kangxian; Liu, Zuolian; Zheng, Yun-Bao

doi:10.1016/j.physleta.2007.09.075

Cited by 122 publications

(31 citation statements)

References 20 publications

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“…Transition between subbands B. Vaseghi (B) · G. Rezaei · V. Azizi Department of Physics, College of Sciences, Yasouj University, Yasouj, in the valence or conduction bands along with large values of dipole matrix elements and possibility of achieving the resonance conditions, both the linear and the nonlinear optical processes in these structures are widely investigated (Xie 2008;Li et al 2008;Pourmand and Rezaei 2010;Rosencher and Bois 1991;Vahdani and Rezaei 2009;Rezaei et al 2010;Wang and Guo 2005).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous effects of spin-orbit interaction and external electric field on the linear and nonlinear optical properties of a cubic quantum dot

2011

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In this article simultaneous effects of external electric field and spin-orbit interaction on the linear and the nonlinear optical properties of a cubic quantum dot are studied. Based on the non-degenerate perturbation method, energy eigenvalues and eigenfunctions of the system under the influence of spin-orbit interaction are calculated. Furthermore, the linear and the nonlinear optical absorption coefficients and refractive index changes are obtained using the compact density matrix approach and iterative method. Our results show that, due to the spin-orbit interaction, resonant peak values of the optical absorption coefficients and refractive index changes decrease and occur at lower values of the incident photon energy. The variation of these optical parameters depend on the spin-orbit interaction strength, dot dimensions and external electric field.

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Section: Introductionmentioning

confidence: 99%

Simultaneous effects of spin-orbit interaction and external electric field on the linear and nonlinear optical properties of a cubic quantum dot

2011

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“…Zeeman transition energies were researched by considering the external magnetic field effects on binding energies of the ground state and excited states of a spherical quantum dot [17]. The effects of the external electric and magnetic field on nonlinear optical rectifications (NOR) of a parabolic quantum dot were investigated within in the framework of compact‐density‐matrix approach and iterative method [18]. The influences of the external electric and magnetic field on total refractive index changes (TRICs), total absorption coefficients (TACs) and NOR of finite semiparabolic quantum dots were studied within a numerical formalism [19].…”

Section: Introductionmentioning

confidence: 99%

Optical response of plasma processed quantum dot under the external fields

Kılıç

Bahar

2020

Int J of Quantum Chemistry

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We investigate theoretically the total refractive index changes (TRICs) and the total absorption coefficients (TACs) of two‐electron Gaussian quantum dot (TEGQD) including Gaussian potential confinement generated by GaAs/GaAlAs heterostructure, embedded in Debye and quantum plasma environments modeled by the more general exponential cosine screened Coulomb (MGECSC) potential, under the influence of the external electric and magnetic field. The wave equation is solved within the effective mass approach framework by using Runge–Kutta–Fehlberg method in order to obtain the subband spectra and the electronic wave functions of TEGQD. Nonlinear optical response of TEGQD is obtained through the compact‐density‐matrix formalism within the iterative method. The effects of both Debye and quantum plasma environments in the strong and weak regimes of the external fields are considered and compared throughout the study. The potents of the external electric field, the external magnetic field, the quantum dot width, the barrier height, and the plasma screening on TRICs and TACs resonant frequencies and amplitudes are analyzed. In addition to these analyses, the alternatives to each parameter effects of the model are also elucidated. TRICs and TACs analyze are carried out in a plasma‐free environment, and thus the function of environments with plasma compared to that without plasma is better explained. Thanks to all these reviews, it is elucidated how to and at what ranges perform in terms of the incident photon energy of TEGQD's optimum for TRICs and TACs characters by using plasma, and in which cases it will be an alternative to the external field and geometrical encompassing.

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“…Electric field ( F ) and magnetic field ( B ) are two prominent physical quantities which are well known for providing valuable information on LDSS. The incorporation of F and B , in effect, alters the effective confinement potential of LDSS.…”

Section: Introductionmentioning

confidence: 99%

Profiles of Static Quadrupole Polarizability of Impurity‐Doped Quantum Dots Driven by Gaussian White Noise

Ghosh

Arif

Bera

et al. 2020

Physica Status Solidi (b)

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Herein, the influence of Gaussian white noise on static quadrupole polarizability (SQP) of the impurity‐doped quantum dots (QDs) is studied. The SQP profiles are critically analyzed as several physical quantities are varied over a range in the absence and presence of noise. The introduction of noise to the system is accomplished via two different routes viz. “additive” and “multiplicative.” SQP profiles consist of noticeable features like maximization, minimization, and saturation in the absence of noise and presence of additive noise. However, on most occasions, the SQP profile becomes devoid of any noticeable characteristics in the presence of multiplicative noise. The multiplicative noise plays some noticeable role only during the direct variation in confinement energy. Herein, the exclusive role of additive noise having strength around a typical value for the generation of large SQP is highlighted. The findings bear mentionable importance on the nonlinear optical properties of QD‐based devices under the aegis of noise.

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Nonlinear optical rectification in parabolic quantum dots in the presence of electric and magnetic fields

Cited by 122 publications

References 20 publications

Simultaneous effects of spin-orbit interaction and external electric field on the linear and nonlinear optical properties of a cubic quantum dot

Simultaneous effects of spin-orbit interaction and external electric field on the linear and nonlinear optical properties of a cubic quantum dot

Optical response of plasma processed quantum dot under the external fields

Profiles of Static Quadrupole Polarizability of Impurity‐Doped Quantum Dots Driven by Gaussian White Noise

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