摘要
采用平面波展开法分析三角格子二维光子晶体中负折射现象出现的频率范围,然后用有限时域差分法模拟光在空气和二维三角格子光子晶体界面的折射行为,得到了负折射出现在群速度为负的频段的结论,并且详细比较了光子晶体中不同频率的负折射行为。
The condition of negative refraction is analyzed by using the plane-wave method, then the negative refraction at the interface of air and two-dimension photonic crystal is numerically simulated by FDTD. It is concluded that the light wave refracting negatively always has the negative group velocity. Finally, the conditions of negative refraction at different frequencies are compared in detail.
出处
《量子电子学报》
CAS
CSCD
北大核心
2006年第3期399-402,共4页
Chinese Journal of Quantum Electronics
基金
国家自然科学基金(10474076)资助项目
关键词
材料
光子晶体
负折射现象
平面波展开法
时域有限差分法
materials
photonic crystal
negative refraction
plane wave method
finite difference time domain
