Enhanced modeling of band nonparabolicity with application to a mid-IR quantum cascade laser structure

Vuković, Nikola; Radovanović, J.; Milanović, V.

doi:10.1088/0031-8949/2014/t162/014014

Cited by 12 publications

(11 citation statements)

References 13 publications

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“…This energy represents the turning point of the dispersion relation. We claim the applicability of the model up to max energy of the dispersion relation presented in [4] which is 384meV.…”

Section: Introductionmentioning

confidence: 69%

“…Parameters 1 2 , 0      represent the modified nonparabolicity parameters as given in [2], while coefficients n B and n C are the normalization constants. The Hamiltonian 0 H represents a 4th order differential equation, where only two solutions have physical meaning as shown in [4]. Eigenvalues of 0 H are derived by using boundary conditions from [3].…”

Section: Quantum Well Without Electrical Fieldmentioning

confidence: 99%

“…This results in a fourth-order differential equation with boundary conditions obtained by double integration, which fulfill the requirement for probability current conservation [3]. In [4] the authors presented the model from [2,3] and its application to QCL structures by using the transfer matrix method (TMM). Modeling of NPE represents a nonlinear eigenvalue problem, thus it is preferable to develop an approximate solution.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper we use the model from [2 -4] and apply the second order perturbation theory in order to model energy corrections more accurately. In [2], Ekenberg applied first order perturbation theory for energies, and the authors in [4] only used the unperturbed Hamiltonian from [2], while in this paper we will present a more precise treatment through the second order perturbation theory. We will apply this model to QW structure which yields analytic solution, then consider the QCL structure for which this model can have a great importance, especially for higher frequencies.…”

Section: Introductionmentioning

confidence: 99%

“…It is also important to note that the model from [2 -4] cannot be used for all bound states, as explained in [4]. For GaAs structures with parameters from [2] the model is applicable for energies less than 213meV, and the limiting energy varies on parameters of the structure.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Analysis of dipole matrix element in quantum well and quantum cascade laser under the influence of external magnetic field

Demić¹,

Radovanović²,

Milanović³

2016

Serb J Electr Eng

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We present a method for modeling nonparabolicity effects (NPE) in quantum nanostructures by using second order perturbation theory. We will analyze application of this model on a quantum well without external electric field and a quantum cascade laser (QCL). This model will allow us to examine the influence of magnetic field on dipole matrix element in QCL structures which will give better insight how NPE can disrupt gain of QCL structures.

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“…This energy represents the turning point of the dispersion relation. We claim the applicability of the model up to max energy of the dispersion relation presented in [4] which is 384meV.…”

Section: Introductionmentioning

confidence: 69%

Section: Quantum Well Without Electrical Fieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of dipole matrix element in quantum well and quantum cascade laser under the influence of external magnetic field

Demić¹,

Radovanović²,

Milanović³

2016

Serb J Electr Eng

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Global Optimization Methods for the Design of MIR-THz QCLs Applied to Explosives Detection

Radovanović

Vuković

Milanović

2021

Terahertz (THz), Mid Infrared (MIR) and Near Infrared (NIR) Technologies for Protection of Critical Infrastructures Against Exp

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Monte Carlo modeling applied to studies of quantum cascade lasers

2017

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One of the commonly used approaches of solving electron transport problems in quantum cascade lasers (QCL) is the Monte Carlo (MC) method, based on semiclassical description in the framework of the Boltzmann Transport Equation. A major benefit of MC modeling is that it only relies on well-established material parameters and structure specification, in most cases without the need to use phenomenological parameters. The results of the modeling can be easily interpreted and they give microscopic insight of QCL operation. The goal of the present paper is to review the application of the MC technique to the studies of operation of QCL. The description of the components of the simulation algorithm is provided. Various physical mechanisms governing electron transport in QCL are described and their influence on the operation are reviewed.

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Enhanced modeling of band nonparabolicity with application to a mid-IR quantum cascade laser structure

Cited by 12 publications

References 13 publications

Analysis of dipole matrix element in quantum well and quantum cascade laser under the influence of external magnetic field

Analysis of dipole matrix element in quantum well and quantum cascade laser under the influence of external magnetic field

Global Optimization Methods for the Design of MIR-THz QCLs Applied to Explosives Detection

Monte Carlo modeling applied to studies of quantum cascade lasers

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