Researchers pay more and more attention to the investigation of low-dimensional nonlinear processes, such as material physical interface, artificial polarized crystal domain walls, and bonding or coating interface of different nonlinear materials. The existence of discrete particles in the interface of nonlinear material has significant impact on the nonlinear frequency conversion. Many second-order nonlinear frequency conversion effects at the interface of nonlinear crystals have been studied extensively. What is more, ultra-short pulses of light can also be observed through the stimulation of sum frequency generated on the domain walls of periodically polarized crystals[4–6]. Nonlinear Cherenkov cascading difference frequency, third harmonics, and other higher harmonics[8,9] generated in the superlattice structure have also been the extensive subject of numerous investigations.