Analysis of the influence of external magnetic field on transition matrix elements in quantum well and quantum cascade laser structures

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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A THEORETICAL INVESTIGATION OF THE NUCLEAR RESONANCE ABSORPTION SPECTRUM OF Al27 IN SPODUMENE

Canadian Journal of Physics ◽

10.1139/p53-086 ◽

1953 ◽

Vol 31 (6) ◽

pp. 1010-1014 ◽

Cited By ~ 9

Author(s):

G. Lamarche ◽

G. M. Volkoff

Keyword(s):

Magnetic Field ◽

Theoretical Investigation ◽

Transition Matrix ◽

Uniform Magnetic Field ◽

Dimensionless Parameter ◽

Energy Levels ◽

Resonance Absorption ◽

Matrix Elements ◽

Transition Matrix Elements ◽

The Magnetic Field

A theoretical investigation is presented of the energy levels of a nucleus of spin I = 5/2, a given magnetic moment μ, and electric quadruple moment eQ, placed in a uniform magnetic field H0, and a crystalline electrostatic potential [Formula: see text] without axial symmetry. The dependence of the energy levels, line frequencies, and transition matrix elements on the dimensionless parameter [Formula: see text] is calculated for Al27 for one orientation of a spodumene crystal in the magnetic field H0 over the interesting range of the parameter R linking up the pure quadrupole with the Zeeman spectrum. Other orientations of the crystal are discussed briefly.

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Magnetic field effects on THz quantum cascade laser: A comparative analysis of three and four quantum well based active region design

Physica E Low-dimensional Systems and Nanostructures ◽

10.1016/j.physe.2016.03.019 ◽

2016 ◽

Vol 81 ◽

pp. 275-280 ◽

Cited By ~ 3

Author(s):

A. Daničić ◽

J. Radovanović ◽

V. Milanović ◽

D. Indjin ◽

Z. Ikonić

Keyword(s):

Magnetic Field ◽

Comparative Analysis ◽

Active Region ◽

Quantum Well ◽

Quantum Cascade Laser ◽

Magnetic Field Effects ◽

Quantum Cascade ◽

Field Effects

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OPTICAL TRANSITIONS IN A PARABOLIC GaAs/Ga1-xAlxAs SUPERLATTICES

Surface Review and Letters ◽

10.1142/s0218625x01001117 ◽

2001 ◽

Vol 08 (03n04) ◽

pp. 321-325

Author(s):

ŞAKIR ERKOÇ ◽

HATICE KÖKTEN

Keyword(s):

Transition Matrix ◽

Optical Transition ◽

Matrix Elements ◽

Electron States ◽

Parabolic Potential ◽

Consistent Field ◽

Self Consistent ◽

Self Consistent Field ◽

Transition Matrix Elements ◽

Scf Calculations

We have performed self-consistent field (SCF) calculations of the electronic structure of GaAs/Ga 1-x Al x As superlattices with parabolic potential profile within the effective mass theory. We have calculated the optical transition matrix elements involving transitions from the hole states to the electron states, and we have also computed the oscillator strength matrix elements for the transitions among the electron states.

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