2D and 3D sub-diffraction source imaging with a superoscillatory filter
2D and 3D sub-diffraction source imaging with a superoscillatory filter
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DOI：
10.1364/oe.21.008142
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发表时间：
2013-04-08
期刊：
影响因子：
3.8
通讯作者：
Eleftheriades, George V.
中科院分区：
文献类型：
--
作者：
Amineh, Reza K.;Eleftheriades, George V.
在本文中，我们提出了一种方法来克服众所周知的“衍射极限”，当成像源几个波长远。我们利用超指向性天线的概念设计了一个基于切比舍夫多项式的可控超振荡滤波器（SOF）。将该算法应用于基于反向传播原理的全息算法重构图像。我们证明了这种方法的能力，当成像点源几个波长远的超分辨率的一，二，三维成像。我们还研究了该算法的鲁棒性，包括sofs的清晰度、噪声的存在、成像距离和扫描孔径的大小。(c) 2013年美国光学学会
In this paper, we propose an approach to overcome the well-known "diffraction limit" when imaging sources several wavelengths away. We employ superdirectivity antenna concepts to design a well-controlled superoscillatory filter (SOF) based on the properties of Tschebyscheff polynomials. The SOF is applied to the reconstructed images from holographic algorithms which are based on the back-propagation principle. We demonstrate the capability of this approach when imaging point-sources several wavelengths away in one-, two-, and three-dimensional imaging with super-resolution. We also investigate the robustness of the proposed algorithm with the sharpness of the SOF, the presence of noise, the imaging distance, and the size of the scanning aperture. (c) 2013 Optical Society of America