Fig. 5
Dynamical tuning of nonlinear diffraction. a Demonstration of the dynamic modulation of the splay angle through the application of opposite-direction in-plane electric fields along the grating stripe direction. The variation in the splay angle is estimated to reach a maximum of ±\({\rm{\pi }}/6\) at the maximum electric field strength of ±0.06 V·μm-1 (attributed to instrumental range limitations). b Simulated and experimental diffraction patterns of SH signals under illumination with horizontally polarized and vertically polarized light. c, d Simulated and experimental intensity changes for the +1-st and +2-nd orders of SH signals as the electric field increases from −0.06 V·μm-1 to +0.06 V·μm-1. The incident polarization is horizontal polarization for (c) and vertical polarization for (d)
