Electron-related nonlinearities in GaAs-Ga1−xAlxAs double quantum wells under the effects of intense laser field and applied electric field

► Nonlinear optical properties in double quantum wells. ► Increasing laser field intensity causes redshifts in the peak positions. ► Resonant peak of second order nonlinearities can be blue-shifted. ► Relative change in refractive index depends of the applied electric field. ► The energy position depends of the laser field parameter.