Broadband Response of Second Harmonic Generation in a Two-Dimensional Quasi-Random Quasi-Phase-Matching Structure  

作　　者：MA Dong-Li REN Ming-Liang LI Zhi-Yuan 马冬莉;任明亮;李志远(Laboratory of Optical Physics,Institute of Physics,Chinese Academy of Sciences,P.O.Box 603,Beijing 100190)

机构地区：[1]Laboratory of Optical Physics,Institute of Physics,Chinese Academy of Sciences,P.O.Box 603,Beijing 100190

出　　处：《Chinese Physics Letters》2011年第7期183-185,共3页中国物理快报（英文版）

基　　金：by the National Natural Science Foundation of China under Grant No 10634080;the National Basic Research Program of China under Grant Nos 2007CB613205 and 2007CB935703.

摘　　要：The broadband response of second harmonic generation(SHG)is experimentally observed in a two-dimensional(2D)quasi-random quasi-phase-matching(QPM)structure.A nonlinear conversion efficiency of more than 50%is obtained.Due to the line-type distribution of the reciprocal vector,the second harmonic wave(SHW)covering a broad frequency band is efficiently radiated in the shape of one single spot or three spots instead of a stripe.This is believed to be favorable for its practical application and paves the way for the use of ultrahigh-bandwidth light sources and devices in modern optical technologies.

关 键 词：STRUCTURE HARMONIC QUASI 

分 类 号：O17[理学—数学]