All‐Angle Self‐Collimation‐Based Invisibility Cloaking in 2D Square Lattice Photonic Crystals. Issue 5 (13th April 2020)

• Record Type: Journal Article
• Authors: Karimpour, Saied; Noori, Mina
• Is Part Of: Annalen der Physik. Volume 532:Issue 5(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-04-13
• Subjects: FDTD methods -- invisibility -- photonic crystals -- PWE principles -- self‐collimating systems; Physics -- Periodicals; Chemistry -- Periodicals; 530.05
• DOI: 10.1002/andp.202000026
• Languages: English
• ISSNs: 0003-3804

Abstract

Abstract: Here, a two‐dimensional (2D) hole‐type square lattice photonic crystal is shown to achieve invisibility cloaking based on all‐angle self‐collimation. The proposed structure, which is composed of the high‐refraction‐index dielectric material PbTe ( n PbTe ≈ 6), is applicable in the mid‐infrared (mid‐IR) frequency range. The cloaking region is capable of hiding any object of any shape and size since the incoming wave does not interact with the cloaked object. The optimization process and the functionality of the proposed structure are investigated by equal frequency contour analysis and the finite difference time domain (FDTD) method. Abstract : A highly efficient self‐collimation‐based invisibility cloaking system is presented using a 2D hole‐type square lattice photonic crystal for the mid‐IR range. The structure utilizes a high refraction index material of PbTe with refractive index of ≈6 and is capable of hiding any object with any shape and size. The proposed design is applicable in cloaking of objects from mid‐IR cameras.