Effects of hydrostatic pressure on the nonlinear optical properties of a donor impurity in a GaAs quantum ring

► Binding energy and nonlinear optics in two-dimensional quantum rings. ► Binding energy is an increasing/decreasing function of inner/outer radius. ► Nonlinear optical properties have a blueshift when inner radius increase. ► Nonlinear optical properties show a redshift when outer radius increase. ► Nonlinear optical properties have a blueshift when hydrostatic pressure increases.