Nonlinear optical absorption via two-photon process in asymmetrical Gaussian potential quantum wells. (January 2015) - Phuc, Huynh Vinh
Highlights: Linear and nonlinear optical absorption spectra in AGPQWs have been investigated. The results are calculated for GaAs and Ga1− x Al x As materials. The two-photon absorption process has been included. There is a clear monotonic behavior of the resonant peaks and the half-width in both one and two-photon absorption processes. Abstract: In this paper, linear and nonlinear optical absorption spectrum in asymmetrical Gaussian potential quantum wells under the applied magnetic and electric fields are studied via investigating the phonon-assisted cyclotron resonance (PACR) effect. The results are calculated for GaAs and Ga1− x Al x As materials. Our results show that the optical absorption behaviors and the half-width are significantly dependent on the height of the Gaussian potential, the well width, the magnetic field, and the temperature. It is also found that there is a clear monotonic behavior of the resonant peaks and the half-width as functions of the factors mentioned above in both one and two-photon absorption processes.