The study demonstrates wave manipulation characteristics of a directional double-zero-index material, suggesting new applications in optics.
Key Points
The research aims to develop a strategy for creating directional polarization-independent double-zero-index materials using a three-dimensional photonic crystal.
Proposed a theoretical strategy for achieving double-zero-index materials.
Investigated the characteristics of the material at the semi-Dirac point.
Analyzed wave manipulations, including total transmission and directional emission.
Identified a fourfold semi-Dirac point with unique linear and quadratic dispersions.
Demonstrated total transmission of circularly polarized electromagnetic waves.
Showed highly collimated directional emission from the material.