Wavelet-transform analysis for independent electrooptic control of multiple quasi-phase-matched nonlinear optical interactions

This work reports on the utility of window-transform tools to analyze independent electrooptic control of multiple quasi-phase-matched (QPM) nonlinear optical interactions taking place simultaneously in domain-engineered ferroelectric crystals. It is shown that aperiodic domain distributions leading to a similar set of second-order nonlinear interactions behave in a different way with respect to electrooptic alteration of their QPM response.