Experiment of diffraction in nonlinear optics : second harmonic generation by a nonlinear grating

Abstract

We report an experiment in which second harmonic generation is performed using a nonlinear grating, i.e. a grating impressed on a nonlinear medium (which, in our case, is silver), with variable groove depth. We observed for the groove depth the existence of an optimum value for which the second harmonic peak intensity is the greatest