Extending the Brewster Effect to Arbitrary Angle and Polarization using Bianisotropic Metasurfaces

TL;DR

This paper introduces a bianisotropic metasurface design that extends the Brewster effect to any angle and polarization, enabling near-zero reflection over a broad angular range near normal incidence.

Contribution

The paper presents a novel metasurface synthesis method using surface susceptibility tensors and GSTCs, extending the Brewster effect to arbitrary angles and polarizations.

Findings

Achieves near-zero reflection over 0-30 degrees near normal incidence

Demonstrates broad angular range for paraxial optics applications

Narrower angular range at oblique angles for spatial filtering

Abstract

A bianisotropic metasurface design is proposed for extending the Brewster effect to arbitrary angles and polarizations. The metasurface is synthesized using the surface susceptibility tensor and Generalized Sheet Transition Conditions (GSTCs) synthesis method, and is demonstrated by GSTC-FDFD simulation. It is found that an extremely broad angular range (0-30) with near zero reflection may be obtained near the normal angle, which is of paramount interest in paraxial optics, while narrower angular range at more oblique angles may find applications in spatial filtering.