Manipulating the Orbital Angular Momentum of Light at the Micron Scale with Nematic Disclinations in a Liquid Crystal Film
Language
en
Article de revue
This item was published in
Physical Review Letters. 2013, vol. 111, n° 3, p. 037802
American Physical Society
English Abstract
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 ...Read more >
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.Read less <
English Keywords
Defects in liquid crystals
Optical angular momentum and its quantum aspects
Optical elements
devices and systems
Birefringence
polarization
Origin
Hal imported