Magnetopolaron effects on the optical absorptions in a parabolic quantum dot

We investigate the influence of magnetic field on the linear and nonlinear optical absorptions in a parabolic quantumdot (QD) through electron—LO-phonon interaction by using the Lee-Low-Pines-Huybrecht variational calculation for all coupling strengths. We apply our calculations to GaAs which is a good candidate in III–V group semiconductors. We find that all the absorption spectra are strongly affected by the electron—LO-phonon interaction, the applied magnetic field, and the Coulomb binding potential. Furthermore, due to the Zeeman splitting, the response of all the absorption values in transition (+1→0) and (−1→0) closely depends on the magnetic field increasing. (paper)