An infrared invisibility cloak composed of glass

Abstract

We propose to implement a nonmetallic low-loss cloak for the infrared range from identical chalcogenide glass resonators. Based on transformation optics for cylindrical objects, our approach does not require metamaterial response to be homogeneous and accounts for the discrete nature of elementary responses governed by resonator shape, illumination angle, and inter-resonator coupling. Air fractions are employed to obtain the desired distribution of the cloak effective parameters. The effect of cloaking is verified by full-wave simulations of the true multiresonator structure. The feasibility of cloak fabrication is demonstrated by prototyping glass grating structures with the dimensions characteristic for the cloak resonators.

Spherical cloaking using multilayer shells of ordinary dielectrics

“…11 The parameters in Table I were employed to calculate the TSCS (Q S) values for the cloaked targets by using Eq. (1)- (4). For the target with a = 0.5λ Q S was found to be 0.72λ 2 , i.e.…”

Artificial dispersion of all-dielectric gradient nanostructures: frequency-selective interfaces and tunneling-assisted broadband antireflection coatings

“…Диэлектрические композитные струк-туры с "диэлектрической проницаемостью возле нуля" и "высокой диэлектрической проницае-мостью" могут обеспечить базу для разработки нанорезисторов для сложных оптических схем [2,3]. Применение концепций радиотехники в оптике проложило путь к генерации магнит-ных полей на оптических частотах с помощью резонансного возбуждения светом немагнитных диэлектрических наноцилиндров [4] и нанос-фер [5]. Отметим, что все эти элементы могут быть построены из пространственно однород-ных диэлектрических композитов, характеризу-ющихся некоторым фиксированным значением (положительным или отрицательным) диэ-лектрической проницаемости.…”

“…The "epsilon-near-zero" and "epsilon-ver y-large" dielectric composites can provide the platform for elaboration of nanoresistors for lumped optical circuits [2,3]. Extension of the radio technique concepts to the optical domain paved the way to the generation of magnetic fields at optical frequencies by means of resonant excitement of non-magnetic dielectric nanocylinders [4] and nanospheres [5] by light. Note, that all these этих мод в местах неоднородности градиента показателя преломления на границах смежных нанопленок.…”

Mu-negative, double-negative, and composite right/left handed metamaterials based on dielectric resonators

“…It is noted that such a manner of manipulation of dielectric constant is conventional in optics, except for the mathematical concept of the transformation. Some other composite structures for cloaking were designed by distributing resonant-type dielectrics into the host medium in order to manipulate effective permeability [44,45]. The latter approach is very dispersive but is considered more intrinsic to metamaterials, in the same manner as SRR [46].…”