Combined effects of electric, magnetic, and intense terahertz laser fields on the nonlinear optical properties in GaAs/GaAlAs quantum well with exponentially confinement potential
Date
23 NovembeMetadata
Show full item recordAbstract
We are presenting a theoretical investigation on the effects of applied electric,
magnetic, and non-resonant intense laser field on the coefficients of intersubband linear,
third-order nonlinear, and total optical absorption and of relative refractive index change in
GaAs/GaAlAs quantum wells with exponentially confining potential. It also includes the
study of the impact of adjustable potential parameters. The energy states of conduction band
electrons in the structure are calculated by using the effective mass and envelope function
approximations. With regard to the optical response, it is found that with the strengthening
of magnetic field, the resonant peak positions shift to lower energies and their magnitudes
decrease. Increasing in the values of adjustable potential parameters as well as of the static
electric and laser intensities causes the peak positions to shift toward higher energies and
their magnitudes to augment. These results show that the optical properties of the system can
be adjusted according to the purpose, by changing the magnitude of applied external fields
and structure parameters.