Enhanced and tunable resolution from an imperfect negative refractive index lens

被引：9
|
作者：
Chen, Yulu [1 ]
Hsueh, Yu-Chun [1 ]
Man, Mengren [1 ]
Webb, Kevin J. [1 ]
机构：
[1] Purdue Univ, W Lafayette, IN 47907 USA
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2016年 / 33卷 / 03期
基金：
美国国家科学基金会;
关键词：
MAGNETIC RESPONSE; SUPERLENS; MICROSCOPY;
D O I：
10.1364/JOSAB.33.000445
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Material loss diminishes the ability of a negative refractive index material to function as a superresolution lens. We find that the transmittance of a negative index slab can be greatly enhanced at a certain evanescent field spatial frequency if the imaginary parts of the permittivity and permeability in the slab can be tuned, even when the object, lens, and image domains have overall loss. This leads to a proposed method to image the farsubwavelength features of an object by reconstructing the evanescent part of its spectrum. (C) 2016 Optical Society of America
引用
收藏
页码：445 / 451
页数：7
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