Photonic band in two-dimensional lattices of micrometer-sized spheres mechanically arranged under a scanning electron microscope
Photonic band in two-dimensional lattices of micrometer-sized spheres mechanically arranged under a scanning electron microscope
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DOI：
10.1063/1.372962
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发表时间：
2000-04
影响因子：
3.2
通讯作者：
H. Miyazaki;H. Miyazaki;K. Ohtaka;Tomomasa Sato
中科院分区：
文献类型：
--
作者：
H. Miyazaki;H. Miyazaki;K. Ohtaka;Tomomasa Sato
在扫描电子显微镜下，利用微操作技术，通过排列单个介质球，制备了直径为2.1 μm的二维光子晶体。通过测量由不同数目的球体组成的晶格的透射光谱，已经观察到随着球体数目的增加，来自回音壁模式的光子带的积累。在近红外区，由斜入射的透射谱实验得到了91个球组成的有限系统的光子带色散曲线。它们与数值计算的结果在一个无限的晶格是很好的协议。由于这种机械操作技术使我们能够控制单个光波长大小的散射体的排列，它提供了一种新的方法来系统地研究各种光子带效应。
Two-dimensional photonic crystals of dielectric spheres with a 2.1 μm diameter have been fabricated by arranging individual spheres using a micromanipulation technique in a scanning electron microscope. A buildup of photonic bands from whispering gallery modes has been observed as the number of spheres increased, by measuring the transmission spectra for lattices composed of various numbers of spheres. The photonic band dispersion curves were experimentally obtained for a finite system made of 91 spheres from the transmission spectra for oblique incidence in the near-infrared region. They were in good agreement with the results of a numerical calculation for an infinite lattice. Since this mechanical manipulation technique enables us to control the arrangement of individual optical wavelength-sized scatterers, it provides a new way to systematically investigate various photonic band effects.