Spin-optical solitons in liquid crystals

Gaetano Assanto, Noel F Smyth

Research output: Contribution to journalArticlepeer-review


In the framework of nonlinear spin-optics, we investigate self-confined light beams in reorientational nematic liquid crystals. Using modulation theory and numerical experiments, we analyse spatial solitary waves supported by the geometric phase arising in a uniaxial when subject to a nonlinear modulation of its optic axis distribution. Spin evolution and optical reorientation in an index-homogeneous medium give rise to a longitudinally periodic, transversely inhomogeneous potential able to counteract the diffraction of a polarized bell-shaped beam, generating a spin-optical solitary wave. Spin-optical solitary waves evolve in polarization and have an oscillatory character in amplitude, size and ellipticity.
Original languageEnglish
Article number033501
Number of pages13
JournalPhysical Review A
Issue number3
Early online date1 Sep 2020
Publication statusPublished - 30 Sep 2020

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