光电工程, 2008, 35 (3): 117, 网络出版: 2010-03-01
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
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。
Abstract
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.
张晓玉, 高洪涛, 王长涛, 周崇喜, 杜春雷, 邢廷文, 姚汉民. 激波调制光子晶体频率转换效应的研究[J]. 光电工程, 2008, 35(3): 117. ZHANG Xiao-yu, GAO Hong-tao, WANG Chang-tao, ZHOU Chong-xi, DU Chun-lei, XING Ting-wen, YAO Han-min. Frequency Shift Effect in Photonic Crystals Modulated by Shock Wave[J]. Opto-Electronic Engineering, 2008, 35(3): 117.