# Spectrally tunable linear polarization rotation using stacked metallic metamaterials

## TL;DR

This paper presents a theoretical study of stacked metallic metamaterials capable of spectrally tunable polarization rotation, with potential applications in polarimetry and THz wave control.

## Contribution

It introduces an analytical Jones formalism to rigorously analyze how stacking and geometry influence polarization rotation in metallic metamaterials.

## Key findings

- Achieves broadband and narrowband polarization rotation with high Q factors
- Demonstrates the influence of structure arrangement and geometry on spectral transmission
- Provides a rigorous analytical framework for designing polarization control devices

## Abstract

We theoretically study the transmission properties of a stack of metallic metamaterials and show that is able to achieve a perfect transmission selectively exhibiting broadband ($Q<10$) or extremely narrowband ($Q>10^5$) polarization rotation. We especially highlight how the arrangement of the stacked structure, as well as the metamaterial unit cell geometry, can highly influence the transmission in the spectral domain. For this purpose, we use an extended analytical Jones formalism that allows us to get a rigorous and analytical expression of the transmission. Such versatile structures could find potential applications in polarimetry or in the control of the light polarization for THz waves.