Linear and nonlinear optical absorption coefficients and refractive index changes associated with intersubband transitions in a quantum disk with flat cylindrical geometry

Study of non-linear optical properties of center and edge delta-doped multiple quantum wells

“…The terms χ (1) (ω), χ (2) (2ω) and χ (3) (3ω) are known as the linear, the second and the third-order non-linear optical susceptibilities, respectively, and ε 0 is the electrical permittivity of vacuum. We use the compact density matrix method [31][32][33][34] to derive the expressions for various orders of electric susceptibilities and polarization components. The mathematical procedure is relatively simple and clear.…”

Linear and nonlinear absorption coefficients of spherical two-electron quantum dot

“…For QDs, one-and twoelectron integrals given in Eqs. (10)(11)(12) can be easily evaluated by modifying for appropriate consideration of the boundaries the expressions of atomic systems [44].…”

“…Therefore, many authors have studied the binding energies, the effects of electric and magnetic field and other physical properties of oneelectron QD with various size and shapes [1][2][3][4][5][6]. In one-electron QDs, linear and nonlinear absorption coefficients have attracted the attention of researchers both experimentally and theoretically [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25], because QDs have the potential for the device applications such as farinfrared photodetectors, laser amplifiers(wavelength 10m), optical memories, light emitting diodes and high-speed electrooptical modulators [26][27][28].…”

Nonlinear optical absorption via two-photon process in asymmetrical Gaussian potential quantum wells

“…In these works, the authors have found that the energy levels and inter-subband properties can be modified and controlled by the hydrostatic pressure and temperature. In the other hand, with the applied electric and magnetic fields, the linear and nonlinear optical absorption coefficients have been investigated in a square quantum well [12], V-shaped quantum well [13], double inverse parabolic quantum well [14], parabolic quantum well [15], GaAs/GaAlAs asymmetric double quantum wells [16], cylindrical quantum wires [17], quantum disk with flat cylindrical geometry [18], quantum dot [19,20], and in parabolic two-dimensional quantum rings [21]. These works results showed that the optical absorption coefficients depend not only on the structure of the system but also on the strength of the static magnetic and/or electric fields.…”