Effects of external electric and magnetic fields on the linear and nonlinear optical properties of InAs cylindrical quantum dot with modified Pöschl-Teller and Morse confinement potentials

Binding Energy And Absorption of Donor Impurity In Spherical GaAs/AlxGa1-x As Quantum Dots With Konwent Potential

“…6(c1, c2), where the resonant peak of linear OAC is directly proportional to the Ω-factor (see Eqs. (10) and ( 14)). Although the wavefunctions overlap better in the core/shell structure (see Figs.…”

“…For this reason, QDs are very important topics for researchers both theoretically and experimentally. As well as the geometric form and size of the confinement potential of QDs [4][5][6][7][8][9], the externally applied electric, magnetic and intense laser fields [10][11][12][13][14][15][16][17][18][19] affect the electronic properties, which influences the optical properties of QD. In devices based on QDs, the effects caused by impurities are also quite important and thus there are a lot of researches involving impurity-related studies with a special focus on QDs [20][21][22][23][24][25].…”

Effects of an External Magnetic Field on the Interband and Intraband Optical Properties of an Asymmetric Biconvex Lens-Shaped Quantum Dot

“…Now let us consider the direct intraband light absorption. Analytical expressions for the linear and nonlinear optical absorption coefficients are obtained, using the compact density matrix approach and iterative method [ 42 , 43 ]. Thus, the linear and third-order nonlinear optical absorption coefficients of a QD can be written as: where is the permeability of the system, is the electron density in a QD, is energy difference between the final and initial states ( and , respectively), is the relaxation rate for states and (corresponds to the full width at half maximum), is the incident optical intensity, is the matrix element of dipole moment, and is the refractive index.…”

Linear and Nonlinear Optical Absorption of CdSe/CdS Core/Shell Quantum Dots in the Presence of Donor Impurity

“…Therefore, in further calculations, we used the modified Pöschl-Teller potential (MPTP) as a confinement potential model. In [33][34][35][36], to model the conduction band structure of core/shell QD, the Pöschl-Teller potential was used. In the following calculations, we considered only the ground states of the magnetic and orbital quantum numbers; therefore, the angular parts of the Schrödinger equation were not considered within the framework of this problem.…”