Engineering the near-field imaging of a rectangular-lattice photonic-crystal slab in the second band

被引：5

作者：

Feng Shuai ^{[1
]}

Ao Ling ^{[1
]}

Wang YiQuan ^{[1
]}

机构：

[1] Cent Univ Nationalities, Coll Sci, Beijing 100081, Peoples R China

来源：

SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY | 2009年 / 52卷 / 01期

基金：

中国国家自然科学基金;

关键词：

photonic crystal; negative refraction; subwavelength imaging; NEGATIVE REFRACTION; GAP;

D O I：

10.1007/s11433-009-0022-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Imaging properties of a two-dimensional rectangular-lattice photonic crystal (PC) slab consisting of air holes immersed in a dielectric are studied in this work. The field patterns of electromagnetic waves radiated from a point source through the PC slab are calculated with the finite-difference time-domain method. Comparing the field patterns with the corresponding equifrequency-surface contours simulated by the plane-wave expansion method, we find that an excellent-quality near-field image may be formed through the PC slab by the mechanisms of the simultaneous action of the self-collimation effect and the negative-refraction effect. Near-field imaging may be obtained within two different frequency regions in two vertical directions of the PC slab.

引用

页码：87 / 91

页数：5

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