Nonlinear optical rectification in a vertically coupled lens-shaped InAs/GaAs quantum dots with wetting layers under hydrostatic pressure and temperature

2016 ◽  
Vol 671 ◽  
pp. 200-207 ◽  
Author(s):  
R. Ben Mahrsia ◽  
M. Choubani ◽  
L. Bouzaiene ◽  
H. Maaref
Keyword(s):  
Quantum Dots ◽  
Hydrostatic Pressure ◽  
Nonlinear Optical ◽  
Optical Rectification ◽  
Wetting Layers ◽  
Nonlinear Optical Rectification

scholarly journals Nonlinear Optical Rectification of Tuned Quantum Dots Under the Action of a Vertical Magnetic Field

2021 ◽  
Author(s):  
Zhuang Zhao
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Nonlinear Optical ◽  
Blue Shift ◽  
High Energy ◽  
Optical Rectification ◽  
Mass Approximation ◽  
Structure Plane ◽  
Nonlinear Optical Rectification ◽  
Peak Value

Abstract The effects of tuned quantum dots (QD) on the optical rectification (OR) coefficient under the action of the external magnetic field, hydrostatic pressure, temperature and quantum dot radius is theoretically studied in detail. The tuned quantum dots are subjected to a uniform magnetic field perpendicular to the structure plane. Within the framework of effective mass approximation and parabolic approximation, the energy level and wave function are derived, and the nonlinear optical rectification coefficients are calculated by the compact density matrix method and iterative method. Numerical results show that under different constraint parameters, the resonance peak of the OR coefficient moves in the direction of high energy or low energy, that is, red shift or blue shift. At the same time, the peak value of the OR coefficient will increase or decrease with the change of the parameters.

Simultaneous effects of hydrostatic pressure, temperature and aluminum concentration on nonlinear optical rectification, second- and third-harmonic generation in a GaAs/Ga1−xAlxAs morse quantum well

2019 ◽  
Vol 33 (04) ◽  
pp. 1950009 ◽  
Author(s):  
Jun-Sheng Li ◽  
Zhi-Hai Zhang ◽  
You-Wen Liu ◽  
Jian-Hui Yuan
Keyword(s):  
Hydrostatic Pressure ◽  
Quantum Well ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Great Influence ◽  
Third Harmonic Generation ◽  
Aluminum Concentration ◽  
Optical Rectification ◽  
Third Harmonic ◽  
Nonlinear Optical Rectification

In this work, the simultaneous effects of aluminum concentration, hydrostatic pressure and temperature on the nonlinear optical rectification (OR), second- and third-harmonic generation (SHG and THG) in a GaAs/Ga[Formula: see text]Al[Formula: see text]As morse quantum well (QW) are studied. The expressions of OR, SHG and THG in morse QW were derived with the use of the compact-density-matrix approach and iterative method. The simultaneous effects of aluminum concentration, hydrostatic pressure and temperature on the effective mass have been taken into account. It is found that (1) the presence of the aluminum concentration, hydrostatic pressure and temperature have a great influence on the symmetry of the system, the nonlinear OR, SHG and THG. (2) the variation of the resonant peaks of the OR and SHG shows complicated behavior as the temperature changes. (3) the temperature effect is weaker than the aluminum concentration and hydrostatic pressure effects on the nonlinear OR, SHG and THG. The influences of different parameters of GaAs/Ga[Formula: see text]Al[Formula: see text]As morse QW and applied field strengths on the nonlinear OR, SHG and THG are discussed.

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