期刊
OPTICS LETTERS
卷 34, 期 18, 页码 2805-2807出版社
OPTICAL SOC AMER
DOI: 10.1364/ol.34.002805
关键词
-
类别
资金
- Engineering and Physical Sciences Research Council (EPSRC)
- Higher Education Funding Council for England (HEFCE)
- University of Southampton
We show that a planar aperiodic lattice, mimicking the appearance of a sunflower, supports photonic bandgaps for weak dielectric contrast. The pattern's high orientational order and spatially uniform modal pitch yields an isotropic Fourier space. A 2D structure of cylinders (epsilon=2) in air possesses a wide 21% TM bandgap, versus 5.6% for a sixfold lattice or 14% for a 12-fold fractal tiling. The isotropic gap frequencies imply flat bands, and thus application in nonlinear optics and low threshold lasers, where a reduced group velocity in all directions may be desired. (C) 2009 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据