Cappelletti, R.
and Vinson, J.
(2020),
Restricting Orbital Angular Momentum by Transverse Coherence, Physical Review Letters, [online], https://doi.org/10.1002/pssb.202000257
(Accessed April 23, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Restricting Orbital Angular Momentum by Transverse Coherence
Published
Author(s)
,
Abstract
A traveling wave or wave packet may possess orbital angular momentum in the form of a phase vortex about its axis of propagation. These orbital angular momentum states are a general wave phenomenon, and, as such, can be realized for individual wave packets or in a wave of unstructured particles or the continuum in between. Such waves can be generated by various techniques, including by passing an unstructured wave through a vortex phase plate. The generation of single-particle vortex states with this technique is reliant on each particle adequately sampling the area of the vortex plate. If the transverse restriction of the wave incident upon the plate is such as to completely occlude illumination of the discontinuity at the center of the vortex phase plate, the probability of detecting a single particle having a unit of orbital angular momentum vanishes. Here we examine this effect using laser light and consider the implications for interactions using orbital angular momentum beams of light or matter.Citation
Physical Review Letters
Pub Type
Journals
Download Paper
Keywords
coherence, orbital angular momentum, light, restriction, neutron
Citation
Created September 4, 2020, Updated November 9, 2020