Linear and nonlinear magneto-optical absorption in parabolic quantum well

The linear and nonlinear optical absorption via one and two-photon processes in the finite symmetric parabolic quantum well (FSPQW) under the applied magnetic field have been studied numerically for typical GaAs/GaxAl1−xAs. The analytical expression of the magneto-optical absorption coefficient (MOAC) is obtained by relating it to the transition probability for the absorption of photons. The effects of the magnetic field, the temperature, and the well width on MOAC and full-width at half-maximum (FWHM) are investigated. Results reveal that MOAC and FWHM are monotonic functions of these factors in both one and two-photon absorption processes. Obtained results also show that the magneto-optical properties of FSPQW can be controlled by changing these parameters. This suggests a new capacity for magneto-optical device applications.