Focusing properties of two-dimensional photonic quasicrystal flat lens at different object distances

被引：7

作者：

Liu, Jianjun ^{[1
,2
]}

Zuo, Baojun ^{[1
]}

Chen, Shouqian ^{[1
]}

Hu, Haili ^{[1
]}

Xiao, Haosu ^{[1
]}

Zhang, Wang ^{[1
]}

Fan, Zhigang ^{[1
]}

Guo, Hao ^{[3
]}

Zhang, Xiong ^{[3
]}

机构：

[1] Harbin Inst Technol, Sch Astronaut, Harbin 150001, Peoples R China

[2] NE Petr Univ, Sch Elect Sci, Daqing 163318, Peoples R China

[3] Southeast Univ, Sch Elect Sci & Engn, Nanjing 210096, Jiangsu, Peoples R China

来源：

OPTICAL ENGINEERING | 2012年 / 51卷 / 07期

关键词：

object distance; photonic quasicrystal; flat lens; focusing; full width at half maximum; TRANSLATIONAL SYMMETRY; RESOLUTION; SLAB;

D O I：

10.1117/1.OE.51.7.074005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the object-distance effect on the focusing properties of a two-dimensional (2-D), photonic quasicrystal (PQC) flat lens by numerical simulation. For the image power and image quality, the half-thickness of the flat lens is no longer the optimal object distance. The object-image distance is not always double the flat lens thickness, which is apparently different from a 2-D, periodic photonic crystal (PPC) flat lens and left-handed material (LHM) flat lens. With the point-light source located near half-thickness of the lens object distance, a 2-D PQC flat lens can achieve a perfect image in a certain range. With an appropriate object distance, a 2-D PQC flat lens is much better than a 2-D PPC flat lens in the aspect of imaging resolution. The results are beneficial to understand the focusing and imaging of a 2-D PQC flat lens. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.7.074005]

引用

页数：5

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