Optical angular momentum transfer on total internal reflection

Ritboon, A., Croke, S. and Barnett, S. M. (2019) Optical angular momentum transfer on total internal reflection. Journal of the Optical Society of America B: Optical Physics, 36(2), pp. 482-492. (doi:10.1364/JOSAB.36.000482)

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Abstract

We study the mechanism of optical angular momentum transfer from light to a dielectric medium on total internal reflection. We employ a quantized approach and, in particular, work with a single-photon pulse. This allows us to evaluate the force and torque per photon and also, crucially, to evaluate forces and torques conditioned on transmission or reflection at an interface. The reflected electric and magnetic fields of an incident paraxial beam carrying orbital and spin angular momentum are obtained using an angular spectrum method. We calculate the expectation value of the single-photon torque exerted on the dielectric, due to total internal reflection of a single-photon pulse, using the dipole-based Lorentz force density. We apply this result to describe the angular momentum transfer from light on passing through an M-shaped Dove prism.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barnett, Professor Stephen and Ritboon, Atirach and Croke, Dr Sarah
Authors: Ritboon, A., Croke, S., and Barnett, S. M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of the Optical Society of America B: Optical Physics
Publisher:Optical Society of America
ISSN:0740-3224
ISSN (Online):1520-8540
Published Online:03 January 2019
Copyright Holders:Copyright © 2019 Optical Society of America
First Published:First published in Journal of the Optical Society of America B: Optical Physics 36(2): 482-492
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
721291Astronomy and physics, theoretical physics and application physics / Quantum Theory. Royal Society Research Professorship.Stephen BarnettThe Royal Society (ROYSOC)RP150122S&E P&A - PHYSICS & ASTRONOMY