Controlling asymmetric transmission in layered natural hyperbolic crystals

Jones, R., Camley, R. E. and Macedo, R. (2023) Controlling asymmetric transmission in layered natural hyperbolic crystals. Optics and Laser Technology, 161, 109210. (doi: 10.1016/j.optlastec.2023.109210)

Abstract

We explore the electromagnetic properties of a structure composed of two optically active materials—each layer contains a hyperbolic crystal with its anisotropy axis rotated with respect to the crystal surface. Through this, we can control the transmission spectra where at one frequency, light with a positive incidence angle is transmitted while it is absorbed for a negative incidence angle and the reverse occurs at a second frequency. Using a Gaussian beam analysis, we determine in which material layer the absorption occurs. In a radiating line current source study, we obtain tunable output collimated beams. From these discoveries, our structure can be applied as an efficient frequency or angle selector, demultiplexer, or filter.

• Item Type: Articles
• Keywords: polaritons, hyperbolic materials, asymmetry, transmission, collimated beams.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Macedo, Dr Rair
• Authors: Jones, R., Camley, R. E., and Macedo, R.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Optics and Laser Technology
• Publisher: Elsevier
• ISSN: 0030-3992
• ISSN (Online): 1879-2545
• Published Online: 01 February 2023