Effects of intense laser field and position dependent effective mass in Razavy quantum wells and quantum dots

Effects of Intense Laser Field on Electronic and Optical Properties of Harmonic and Variable Degree Anharmonic Oscillators

“…The parameter values in our numerical calculations are , (where is the free electron mass), meV, ps, , , and . These parameters are suitable for GaAs/GaAlAs heterostructures [ 32 ].…”

“…In the presence of the x -linear polarized incident non-resonant ILF, the potential in Equation ( 2 ) turns into the form called laser-dressed potential [ 29 , 30 , 31 , 32 ], which is given by where , and are the laser-dressing or ILF parameter, the magnitude of the vector potential, and the angular frequency of the non-resonant intense laser field, respectively. The details of the equations given above for dressed potentials and the nonperturbative approach based on the Kramers–Henneberger translation transformation developed to describe the atomic behavior in intense high-frequency ILF can be found in Refs.…”

“…Using the relevant approaches mentioned before, expressions of the linear, third-order nonlinear, and total absorption coefficients (ACs) for the optical transitions are found as follows [ 31 , 32 , 33 , 34 , 35 ], respectively where, is the real part of the permittivity, is the carrier density in the system, is the vacuum permeability, is the energy difference between two impurity states, , is the transition matrix element between the eigenstates and for incident radiation polarized in the x -direction, is the relaxation rate, is the inverse relaxation time, c is the speed of the light in free space, and I is the intensity of incident photon with the -angular frequency that leads to the intersubband optical transitions. It should be noted that due to the even symmetry of the confinement potential.…”

Theoretical study of electronic and optical properties in doped quantum structures with Razavy confining potential: effects of external fields

“…Effects of intense laser field and position dependent effective mass in Razavy QWs (Razavy-like quantum wells) were investigated in Ref. [52]. In their works, these authors have shown that the intensity of the TOAC can be largely tuned by varying the ionized impurity concentration in the doping layer.…”

“…Furthermore, V H (z) is the Hartree potential, which represents the additional conduction band reshaping due to the presence of the low-dimensional electron gas that arises from the donor ionization in the δlayer. Besides, V c (z) is the Razavy-like confining potential given by [52]:…”