Effects of Planar Periodic Stratified Chiral Nihility Structures on Reflected and Transmitted Powers

TL;DR

This paper investigates how planar multilayer periodic structures, including chiral nihility metamaterials, affect reflected and transmitted powers, revealing polarization effects and conditions for transparency or rejection at various angles and frequencies.

Contribution

It introduces a detailed analysis of multilayer structures with chiral nihility layers, highlighting their unique polarization and transmission properties in the terahertz domain.

Findings

Chiral nihility layers can make the structure transparent at normal incidence.

Complete rejection occurs in chiral nihility-chiral nihility structures at oblique angles.

Polarization rotation depends on incidence angle and frequency.

Abstract

Behavior of planar multilayer periodic structures due to plane wave excitation has been studied using the transfer matrix method. Multilayer structure is taken with periodicity two. That is, layers at even and odd locations repeat themselves. Layers at odd locations are of chiral nihility metamaterial whereas three different cases for layers at even locations are considered, i.e., dielectric, chiral and chiral nihility. Effects of polarization rotation due to the optical activity is studied with respect to the angle of incidence and frequency in terahertz domain. Chiral nihility introduces property of transparency to the structure for normal incidence while complete rejection is observed for chiral nihility-chiral nihility structure at oblique incidence.