中国科学院研究生院学报2006，Vol.23Issue(2)：277-287,11.
反Opal及二维非线性光子晶体的研究
Studies on Inverse Opal and Two-Dimensional Nonlinear Photonic Crystals
摘要
Abstract
In this paper, we report some results on inverse opal photonic crystal and two-dimensional periodically poled lithium niobate photonic crystal. First, the process of infiltrating TiO2 into SiO2 Opal was systematically studied. Because of the infiltration of TiO2, the gap of SiO2 Opal was shifted to longer wavelength and a maximum shift of 62nm was observed. Furthermore, an inverse TiO2 Opal with larger filling fraction, ～ 12%, was fabricated, whose band gap in the Γ-L direction is located in the ultraviolet region ( ～ 380nm). Then two-dimensional nonlinear photonic crystals of lithium nlobate with uniform square lattices were fabricated by applying external electric fields. The variations of second-harmonic output with crystal temperatures, incident angles and reversed duty cycles were measured. Red, yellow,green, blue, and violet coherent radiations were generated in the nonlinear photonic crystal with rectangular lattice in the collinearly and non-collinearly quasi-phase matching geometries. The results showed that two-dimensional nonlinear photonic crystal could be used to generate various colors simultaneously and efficiently in different directions.关键词
光子晶体/反Opal/周期极化铌酸锂/准相位匹配/二次谐波Key words
photonic crystal/inverse Opal/periodically poled lithium niobate/quasi-phase matching/second-harmonic generation分类
数理科学引用本文复制引用
倪培根,程丙英,张道中..反Opal及二维非线性光子晶体的研究[J].中国科学院研究生院学报,2006,23(2):277-287,11.基金项目
supported by the National Nature Science Foundation of China(60477044) and Chinese National Key Basic Research Special Fund （60477044）
