Improvement of the Focusing Resolution of Photonic Crystal Negative Refraction Imaging with a Hollow Component Structure

被引：2
|
作者：
Chen Shou-Xiang [1 ]
Yang Xiu-Lun [1 ]
Meng Xiang-Feng [1 ]
Dong Guo-Yan [2 ]
Wang Yu-Rong [1 ]
Wang Lin-Hui [1 ]
Huang Zhe [1 ]
机构：
[1] Shandong Univ, Dept Opt, Jinan 250100, Peoples R China
[2] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2013年 / 30卷 / 05期
基金：
中国国家自然科学基金;
关键词：
SLAB;
D O I：
10.1088/0256-307X/30/5/054206
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The negative refraction and imaging effects in photonic crystals can be used to solve diffraction limit problem in near-field optics. Improving transmission efficiency and image resolution is a critical work for negative refraction imaging. We theoretically investigate the band structures, equi-frequency surfaces, electromagnetic wave propagation, and the image intensity distributions in a two-dimensional hexagonal photonic crystal consisting of hollow components. It is found that, in contrast to a hexagonal photonic crystal consisting of solid dielectric cylinders of the same radius, photonic crystals with hollow components can be used to optimize the all-angle negative refraction. Numerical simulations show that the transmission efficiency and resolution of image can be enhanced by changing the radii of the hollow air rods.
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页数：5
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