Researchers of AMOLF and TU Delft have seen light propagate in a special material without it suffering from reflections. The material, a photonic crystal, consists of two parts that each have a slightly different pattern of perforations. Light can propagate along the boundary between these two parts in a special way: it is topologically protected and, therefore, does not bounce back at imperfections.
Topology protects light propagation in photonic crystal
- 6. 3 2020 (06:00)