Subwavelength imaging of a point source based on two-dimensional photonic crystals

被引：17

作者：

Ma, Hongliang ^{[1
]}

Liang, Binming ^{[1
]}

Zhuang, Songlin ^{[1
]}

Chen, Jiabi ^{[1
]}

Jiang, Qiang ^{[1
]}

Ding, Junwei ^{[1
]}

机构：

[1] Univ Shanghai Sci & Technol, Sch Opt Elect & Comp Engn, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China

来源：

OPTICS LETTERS | 2016年 / 41卷 / 16期

关键词：

NEGATIVE-REFRACTION; LENS; SLAB;

D O I：

10.1364/OL.41.003833

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new two-dimensional (2D) photonic crystal (PC) structure with effective refractive index approaching -1, consisting of periodic array air holes in silicon, is proposed. The light radiated from a point source can form an image through a single wedge PC. Numerical results show that the half-width of the image reaches 0.44 lambda, which is lower than half of the incident wavelength. In addition, the light through the combination of two of the same PCs can also form subwavelength imaging of which the half-width reaches 0.67 lambda, and the image almost flipped 180 degrees compared with a point source. (C) 2016 Optical Society of America

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收藏

页码：3833 / 3835

页数：3

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