Persistence and Lifelong Fidelity of Phase Singularities in Optical Random Waves

Lorenzo De Angelis, Filippo Alpeggiani, Andrea Di Falco, Kobus Kuipers

Research output: Contribution to journalLetterScientificpeer-review

8 Citations (Scopus)
25 Downloads (Pure)

Abstract

Phase singularities are locations where light is twisted like a corkscrew, with positive or negative topological charge depending on the twisting direction. Among the multitude of singularities arising in random wave fields, some can be found at the same location, but only when they exhibit opposite topological charge, which results in their mutual annihilation. New pairs can be created as well. With near-field experiments supported by theory and numerical simulations, we study the persistence and pairing statistics of phase singularities in random optical fields as a function of the excitation wavelength. We demonstrate how such entities can encrypt fundamental properties of the random fields in which they arise.
Original languageEnglish
Article number203903
Pages (from-to)1-5
Number of pages5
JournalPhysical Review Letters
Volume119
Issue number20
DOIs
Publication statusPublished - 16 Nov 2017

Keywords

  • phase singularities
  • chaos
  • nanooptics
  • Michael Berry
  • Lifelong Fidelity
  • optical vortices
  • topological defects
  • nanophotonics
  • near field
  • random waves
  • Evolution
  • Chaotic systems
  • many body interaction

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