Dipole azimuthons and vortex charge flipping in nematic liquid crystals

Yana V. Izdebskaya, Anton S. Desyatnikov, Gaetano Assanto, Yuri S. Kivshar

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)


We demonstrate self-trapped laser beams carrying phase singularities in nematic liquid crystals. We experimentally observe the astigmatic transformation of vortex beams into spiraling dipole azimuthons accompanied by power-dependent charge-flipping of the on-axis phase singularity. The latter topological reactions involve triplets of vortex lines and resemble pitchfork bifurcations.

Original languageEnglish
Pages (from-to)21457-21466
Number of pages10
JournalOptics Express
Issue number22
Publication statusPublished - Oct 24 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Dipole azimuthons and vortex charge flipping in nematic liquid crystals'. Together they form a unique fingerprint.

Cite this