Robust interferometer for the routing of light beams carrying orbital angular momentum

Lavery, M. P.J., Dudley, A., Forbes, A., Courtial, J. and Padgett, M. J. (2011) Robust interferometer for the routing of light beams carrying orbital angular momentum. New Journal of Physics, 13(9), 093014. (doi:10.1088/1367-2630/13/9/093014)

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Publisher's URL: http://dx.doi.org/10.1088/1367-2630/13/9/093014

Abstract

We have developed an interferometer requiring only minimal angular alignment for the routing of beams carrying orbital angular momentum. The Mach–Zehnder interferometer contains a Dove prism in each arm where each has a mirror plane around which the transverse phase profile is inverted. One consequence of the inversions is that the interferometer needs no alignment. Instead the interferometer defines a unique axis about which the input beam must be coupled. Experimental results are presented for the fringe contrast, reaching a maximum value of 93±1%.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Lavery, Dr Martin and Padgett, Professor Miles and Courtial, Dr Johannes
Authors: Lavery, M. P.J., Dudley, A., Forbes, A., Courtial, J., and Padgett, M. J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:New Journal of Physics
Journal Abbr.:New J. Phys.
Publisher:Institute of Physics Publishing Ltd.
ISSN:1367-2630
ISSN (Online):1367-2630
Published Online:07 September 2011
Copyright Holders:Copyright © 2011 Institute of Physics Publishing Ltd.
First Published:First published in New Journal of Physics 13 (9): 093014
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
474271Full-field quantum imagingMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/G011656/1Physics and Astronomy