Approaches to achieve broadband optical transformation devices with transmuted singularity
Approaches to achieve broadband optical transformation devices with transmuted singularity
复制标题
实现具有嬗变奇点的宽带光学变换器件的方法
DOI：
10.1364/josaa.29.000124
复制
发表时间：
2012-01-01
影响因子：
1.9
通讯作者：
Ong, Chongkim
中科院分区：
文献类型：
--
作者：
Ma, Yungui;Sun, Fei;Ong, Chongkim
许多具有介电奇点的光学仪器不能直接制造。它们的奇异性可以通过光学变换来改变，并且可以建立等效的物理介质来执行相同的光学行为。转换后的物理介质通常是各向异性和不均匀的，因此难以制造。在这项工作中，提出了几种数学方法，以产生一个转换的透镜的所有元素的材料张量是不小于1。这增加了实现的容易性，因为可以使用天然材料，这大大拓宽了经变换的设备的带宽。虽然我们专注于一个全向回射透镜作为一个例子，这里开发的方法是通用的，适用于广泛的一类设备与介电奇点。(C)2011年美国光学学会
Many optical instruments with dielectric singularities cannot be manufactured directly. Their singularities can be transmuted through optical transformation, and equivalent physical media can be built to perform the same optical behaviors. The transformed physical media are usually anisotropic and inhomogeneous and, therefore, difficult to fabricate. In this work, several mathematical approaches are proposed to produce a transformed lens with all the elements of the material tensors to be no less than unity. This increases the ease of implementation, as natural materials may be used, which substantially widens the bandwidth of the transformed devices. Although we focus on an omnidirectional retroreflection lens as an example, the approaches developed here are universal and applicable to a wide class of devices with dielectric singularities. (C) 2011 Optical Society of America