Anisotropy effect on the nonlinear optical properties of a three-dimensional quantum dot confined at the center of a cylindrical nano-wire

2014 ◽  
Vol 59 ◽  
pp. 124-132 ◽  
Author(s):  
Gh. Safarpour ◽  
M.A. Izadi ◽  
M. Novzari ◽  
E. Niknam ◽  
M. Moradi
Keyword(s):  
Optical Properties ◽  
Quantum Dot ◽  
Nonlinear Optical ◽  
Three Dimensional ◽  
Nonlinear Optical Properties ◽  
Anisotropy Effect

MAGNETIC FIELD, PRESSURE AND TEMPERATURE DEPENDENT OPTICAL PROPERTIES IN A GaAs 9.0 P 1.0 QUANTUM DOT

2014 ◽  
Vol 6 (2) ◽  
pp. 1178-1190
Author(s):  
A. JOHN PETER ◽  
Ada Vinolin
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
Quantum Dot ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Photon Energy ◽  
Nonlinear Optical ◽  
Binding Energies ◽  
Nonlinear Optical Properties ◽  
Optical Rectification

Simultaneous effects of magnetic field, pressure and temperature on the exciton binding energies are found in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot. Numerical calculations are carried out taking into consideration of spatial confinement effect. The cylindrical system is taken in the present problem with the strain effects. The electronic properties and the optical properties are found with the combined effects of magnetic field strength, hydrostatic pressure and temperature values. The exciton binding energies and the nonlinear optical properties are carried out taking into consideration of geometrical confinement and the external perturbations.Compact density approach is employed to obtain the nonlinear optical properties. The optical rectification coefficient is obtained with the photon energy in the presence of pressure, temperature and external magnetic field strength. Pressure and temperature dependence on nonlinear optical susceptibilities of generation of second and third order harmonics as a function of incident photon energy are brought out in the influence of magnetic field strength. The result shows that the electronic and nonlinear optical properties are significantly modified by the applications of external perturbations in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot.

Nonlinear optical properties of core shell type II quantum dot structures

2020 ◽  
Vol 128 ◽  
pp. 106246 ◽  
Author(s):  
Musa Çadirci ◽  
Yasemin Gündoğdu ◽  
Erdem Elibol ◽  
Hamdi Şükür Kılıç
Keyword(s):  
Optical Properties ◽  
Quantum Dot ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Core Shell ◽  
Type Ii ◽  
Shell Type

Binding Energies and Linear and Nonlinear Optical Properties of a Donor Impurity in a Three-Dimensional Quantum Pseudodot

2013 ◽  
Vol 68 (12) ◽  
pp. 744-750 ◽  
Author(s):  
Muharrem Kirak ◽  
Sait Yilmaz
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Chemical Potential ◽  
Refractive Index Change ◽  
Three Dimensional ◽  
Great Influence ◽  
Binding Energies ◽  
Nonlinear Optical Properties ◽  
Hydrogenic Impurity ◽  
Mass Approximation

A theoretical study of the electronic properties of the ground state and excited states and the linear and the third-order nonlinear optical properties (i. e., absorption coefficients and refractive indices) in a spherical GaAs pseudodot system is reported. The variational procedure has been employed in determining sublevel energy eigenvalues and their wave functions within the effective mass approximation. Our results indicate that the chemical potential of the electron gas and the minimum value of the pseudoharmonic potential have a great influence on the electrical and optical properties of hydrogenic impurity states. Also, we have found that the magnitudes of the absorption coefficient and the refractive index change of the spherical quantum dot increase for transitions between higher levels.

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