Synthesis and Applications of Birefringent Metasurfaces

TL;DR

This paper discusses the mathematical synthesis of birefringent metasurfaces, comparing rigorous and approximate methods, and validates their application in polarization control and multiplexing.

Contribution

It introduces and compares two synthesis methods for birefringent metasurfaces and demonstrates their effectiveness in various polarization manipulation applications.

Findings

The rigorous and approximate synthesis methods produce comparable results.

Validated metasurfaces for half- and quarter-wave plates, polarization beam splitting, and orbital angular momentum multiplexing.

The synthesis techniques enable precise control of amplitude, phase, and polarization of waves.

Abstract

Birefringent metasurfaces are two-dimensional structures capable of independently controlling the amplitude, phase and polarization of orthogonally polarized incident waves. In this work, we propose a in-depth discussion on the mathematical synthesis of such metasurfaces. We compare two methods, one that is rigorous and based on the exact electromagnetic fields involved in the transformation and one that is based on approximate reflection and transmission coefficients. We next validate the synthesis technique in metasurfaces performing the operations of half- and quarter-wave plates, polarization beam splitting and orbital angular momentum multiplexing.