Robustness of a coherence vortex

Appl Opt. 2016 Sep 20;55(27):7544-9. doi: 10.1364/AO.55.007544.

Abstract

We study, experimentally and theoretically, the behavior of a coherence vortex after its transmission through obstacles. Notably, we find that such a vortex survives and preserves its effective topological charge. Despite suffering changes on the modulus of the coherence function, these changes disappear during propagation.