激波调制光子晶体频率转换效应的研究  

Frequency Shift Effect in Photonic Crystals Modulated by Shock Wave

作　　者：张晓玉[1] 高洪涛[1] 王长涛[1] 周崇喜[1] 杜春雷[1] 邢廷文[1] 姚汉民[1] 

机构地区：[1]中国科学院光电技术研究所,成都610209

出　　处：《光电工程》2008年第3期117-121,共5页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(60408004)

摘　　要：研究了被激波调制的光子晶体对入射光产生的频率转换效应。建立了弹性激波调制一维光子晶体的物理模型;提出了准静态带隙结构的概念,并采用FDTD和平面波展开法计算了其光子带隙;通过数值计算和微扰分析,发现该频率转换是一个量化累积过程,并对该频率转换效应及其量化累积现象提出一种基于光子-声子相互作用和表面衰减模的解释,同时,分析了该频率转换效应的特性。Frequency shift effect in photonic crystals modulated by shock wave was studied. The physical model of one-dimension photonic crystals modulated by shock wave was built. Quasi-static bandgap structure was put forward, and its bandgap was calculated using Finite-difference Time-domain （FDTD） and Pulse Width Modulation （PMW）. By performing numerical computation and perturbation analysis, the incidence frequency increased by integral multiple of a certain amount in the process of frequency conversion was found, and photon-phonon interaction and surface decaying mode interpretation for the mechanism of frequency shift was put forward. The characteristic of frequency shift effect was also analyzed.

关 键 词：光子晶体 频率转换 激波 带隙结构 

分 类 号：O734.2[理学—晶体学]