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 |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Croke, Dr Sarah and Barnett, Professor Stephen and Ritboon, Atirach |
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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