Influence on the resolution based on defective NR-PC double flat lens group with Ag for target detection and imaging

被引：0
|
作者：
Lu, Jian [1 ]
Shen, Yang [2 ,3 ]
Shen, TingGen [1 ]
Lian, YingFei [4 ]
Wang, FeiFei [1 ]
Xu, Yang [4 ]
机构：
[1] Jiangsu Univ, Inst Appl Phys, Zhenjiang 212013, Peoples R China
[2] Shanghai Med Instrumentat Coll, Shanghai 200093, Peoples R China
[3] Shanghai Univ Sci & Technol, Shanghai 200093, Peoples R China
[4] Jiangsu Univ, Dept Telecommun Engn, Zhenjiang 212013, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2014年 / 56卷
关键词：
NR-PC; Refocusing resolution; Defects with metal Ag; PHOTONIC BAND-GAP; NEGATIVE REFRACTION; CRYSTALS; SLAB; EDGE;
D O I：
10.1016/j.optlastec.2013.08.008
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we employed the dynamic scanning scheme to study the influence on target detection and imaging based on the defective NR-PC double flat lens group with Ag by finite-difference-time-domain method. We firstly deduced the focusing imaging circuit diagram of NR-PC flat lens with the Snell extension law and geometrical optics principle. Numerical simulations indicate that significant enhancement of the scattering signal can be obtained while the NR-PC flat lens is used for target detection and imaging. Then the imaging principle of NR-PC flat lens group is studied. We find that the distance between the two lenses can be adjusted flexibly. What is important, the resolution of target detection is greatly improved when incorporating Ag into the NR-PC flat lens group. In conclusion, our investigation makes the target detection and imaging by NR-PC flat lens come true, and optimizes the performance of small target detection and imaging system. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：234 / 240
页数：7
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