publication . Article . 2013

Manipulating the Orbital Angular Momentum of Light at the Micron Scale with Nematic Disclinations in a Liquid Crystal Film

Loussert, Charles; Delabre, Ulysse; Brasselet, Etienne;
Open Access English
  • Published: 01 Jan 2013
  • Publisher: American Physical Society
Abstract
International audience; We report on the experimental manipulation of the orbital angular momentum of light by exploiting a kind of topological defects that spontaneously appear in nematics--disclinations--as microscopic optical spin-orbit interfaces whose operating wavelength can be controlled electrically. Using six different kinds of disclinations, we demonstrate the efficient generation of both scalar and vectorial singular light beams with a broad topological diversity from a fundamental Gaussian beam.
Subjects
arxiv: Condensed Matter::Soft Condensed Matter
free text keywords: Optical elements, PACS : 61.30.Jf; 42.50.Tx; 42.79-e; 42.81.Gs, Defects in liquid crystals, Birefringence, [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft], devices and systems, [ PHYS.COND.CM-SCM ] Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], polarization, Optical angular momentum and its quantum aspects, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
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publication . Article . 2013

Manipulating the Orbital Angular Momentum of Light at the Micron Scale with Nematic Disclinations in a Liquid Crystal Film

Loussert, Charles; Delabre, Ulysse; Brasselet, Etienne;