利用准相位匹配技术，在一块具有二维高对称性超晶格的铌酸锂非线性光子晶体中，实现了930~1307 nm激光波长区间中红、橙、黄、绿、蓝等至少5个波段的非共线准相位匹配倍频光斑对。入射基频波长由1118.8 nm下降约52 nm的过程中，除了在波长为1081.4 nm时产生的一个共线倍频光斑，其他波长均为一对非共线倍频绿光斑。入射光波长为1234.5 nm时，屏幕上至少有三对黄色光斑。当基频波长由1306.1 nm减小为1302.6 nm时，非共线倍频红色光斑对之间的间距由3.5 mm增加为5.5 mm，且非共线光斑呈现三角形形状。

By using quasi-phase matching technology, series of non-collinear harmonic pairs in more than five laser wave bands are realized in one piece of LiNbO3 nonlinear photonic crystal with two-dimensional dodecagonal superlattices when the laser wavelengths vary from 930 nm to 1307 nm. With the input fundamental wavelength decreasing from 1118.8 nm by nearly 52 nm, a pair of non-collinear green harmonics always exist except for one collinear harmonic for 1081.4 nm. More than three pairs of yellow harmonics appear on the screen at the input wavelength 1234.5 nm. The distance between pairs of red harmonics increases from 3.5 mm to 5.5 mm with input beam changing from 1306.1 nm to 1302.6 nm and the non-collinear harmonic spots look like triangles.