CST – Computer Simulation Technology

An infrared invisibility cloak composed of glass

Title:
An infrared invisibility cloak composed of glass
Author(s):
Elena Semouchkina, Douglas H. Werner, George B. Semouchkin, Carlo Pantano
Source:
Applied Physics Letters
Vol./Issue/Date:
Volume: 96, Issue: 23, 12 November 2010
Year:
2010
Page(s):
233503-1 - 233503-3
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.
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