Intraband optical absorption in a single quantum ring: Hydrostatic pressure and intense laser field effects

• The combined influence of hydrostatic pressure and intense laser field on the intraband optical absorption in GaAs/Ga0.7Al0.3 single quantum ring is investigated.
• The behavior of the threshold energy and as follows the position of the maximum of the intraband optical absorption strongly depends on the hydrostatic pressure and intense laser field parameter.
• The effects of hydrostatic pressure and intense laser field lead to redshift and blueshift of the intraband optical spectrum respectively.

The intraband optical absorption in GaAs/Ga0.7Al0.3As two-dimensional single quantum ring is investigated. Considering the combined effects of hydrostatic pressure and intense laser field the energy of the ground and few excited states has been found using the effective mass approximation and exact diagonalization technique. The energies of these states and the corresponding threshold energy of the intraband optical transitions are examined as a function of hydrostatic pressure for the different values of the laser field parameter. We also investigated the dependencies of the intraband optical absorption coefficient as a function of incident photon energy for different values of hydrostatic pressure and laser field parameter. It is found that the effects of hydrostatic pressure and intense laser field lead to redshift and blueshift of the intraband optical spectrum respectively.