Helico-conical optical beams self-heal

Opt Lett. 2013 Feb 1;38(3):383-5. doi: 10.1364/OL.38.000383.

Abstract

An optical beam is said to be self-healing when, distorted by an obstacle, the beam corrects itself upon propagation. In this Letter we show, through experiments supported by numerical simulations, that Helico-conical optical beams self-heal. We observe the strong resilience of these beams with different types of obstructions, and relate this to the characteristics of their transverse energy flow.