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A proposed measurement of optical orbital and spin angular momentum and its implications for photon angular momentum
File | Description | Size | Format | |
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Propsed-Measurement_Optical_Spin_OAM_Phys.Lett.pdf | Published version | 189.02 kB | Adobe PDF | View/Open |
Title: | A proposed measurement of optical orbital and spin angular momentum and its implications for photon angular momentum |
Authors: | Leader, E |
Item Type: | Journal Article |
Abstract: | The expression for the total angular momentum carried by a laser optical vortex beam, splits, in the paraxial approximation, into two terms which seem to represent orbital and spin angular momentum respectively. There are, however, two very different competing versions of the formula for the spin angular momentum, one based on the use of the Poynting vector, as in classical electrodynamics, the other related to the canonical expression for the angular momentum which occurs in Quantum Electrodynamics. I analyze the possibility that a sufficiently sensitive optical measurement could decide which of these corresponds to the actual physical angular momentum carried by the beam. |
Issue Date: | 21-Feb-2018 |
Date of Acceptance: | 14-Feb-2018 |
URI: | http://hdl.handle.net/10044/1/58741 |
DOI: | https://dx.doi.org/10.1016/j.physletb.2018.02.029 |
ISSN: | 0370-2693 |
Publisher: | Elsevier |
Start Page: | 385 |
End Page: | 387 |
Journal / Book Title: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume: | 779 |
Copyright Statement: | © 2018 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/ ). |
Sponsor/Funder: | The Royal Society |
Funder's Grant Number: | 2005/R3 |
Keywords: | 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics Nuclear & Particles Physics |
Publication Status: | Published |
Appears in Collections: | Physics High Energy Physics Faculty of Natural Sciences |