Experimental Tuning of Transport Regimes in Hyperuniform Disordered Photonic Materials

Phys Rev Lett. 2020 Sep 18;125(12):127402. doi: 10.1103/PhysRevLett.125.127402.

Abstract

We present wave transport experiments in hyperuniform disordered arrays of cylinders with high dielectric permittivity. Using microwaves, we show that the same material can display transparency, photon diffusion, Anderson localization, or a full band gap, depending on the frequency ν of the electromagnetic wave. Interestingly, we find a second weaker band gap, which appears to be related to the second peak of the structure factor. Our results emphasize the importance of spatial correlations on different length scales for the formation of photonic band gaps.