Topological Shaping of Light by Closed-Path Nanoslits
Language
en
Article de revue
This item was published in
Physical Review Letters. 2013, vol. 111, n° 19, p. 193901
American Physical Society
English Abstract
We propose a discrete set of continuous deformation of a circular nanoslit to generate and control optical vortices at the microscopic scale. The process relies on the interplay between the spin and orbital angular momentum ...Read more >
We propose a discrete set of continuous deformation of a circular nanoslit to generate and control optical vortices at the microscopic scale. The process relies on the interplay between the spin and orbital angular momentum degrees of freedom of light mediated by appropriate closed-path nanoslits milled on a thin gold film. Topological shaping of light is experimentally demonstrated in the visible domain. Moreover, all experimental observations are quantitatively validated by a simple model that takes into account the transverse manipulation of the optical phase via the space-variant form birefringence of subwavelength slits.Read less <
English Keywords
Wave optics
Optical angular momentum and its quantum aspects
Birefringence polarization
Origin
Hal imported