Photonic Bands Using Vector Spherical Waves. II. Reflectivity, Coherence and Local Field
Photonic Bands Using Vector Spherical Waves. II. Reflectivity, Coherence and Local Field
复制标题
使用矢量球面波的光子带。
DOI：
10.1143/jpsj.65.2276
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发表时间：
1996
影响因子：
1.7
通讯作者：
Y. Tanabe
中科院分区：
文献类型：
--
作者：
K. Ohtaka;Y. Tanabe
对于面心立方介质球阵列，应用LEED中的双层法精确计算了光的反射率及其激发的局域场。结果表明，当系统的层数大于4或5时，反射率相当好地再现了带隙，并且15层足以使阻带发展成与带隙宽度精确匹配，除了最低阻带需要大得多的厚度之外。反射率的干涉条纹清晰可见，激发态局域场强度很高，说明了强相干性和强约束效应。
For the fcc arrays of dielectric spheres, the reflectivity of a light and the local field excited by it are calculated exactly by applying the layer doubling method developed in LEED. It is shown that, when the number of the layers of a system is more than 4 or 5, the reflectivity reproduces the band gaps fairly well and 15 layers are enough for the stop bands to develop to match precisely with the band-gap widths, with one exception of the lowest stop band which requires a much larger thickness. Also, the good coherence and strong confinement effect of heavy photon are shown by demonstrating the well-defined interference fringes in the reflectivity and the very high intensity of the excited local-fields.