Measurement of the light orbital angular momentum spectrum using an optical geometric transformation

Lavery, M. P.G., Berkhout, G. C.G., Courtial, J. and Padgett, M. J. (2011) Measurement of the light orbital angular momentum spectrum using an optical geometric transformation. Journal of Optics, 13(6), 064006. (doi:10.1088/2040-8978/13/6/064006)

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Abstract

We recently demonstrated a new method to efficiently analyse the orbital angular momentum (OAM) states of light by application of an optical geometric transformation (Berkhout et al 2010 Phys. Rev. Lett. 105 153601). Here we study the performance of such a system to measure the change in the observed OAM spectrum, as the input beam is misaligned with respect to the analyser. We present modelled and experimental results which show that our reformatting approach does correctly measure the OAM spectrum for lateral and tilt misalignment of the input beam.

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.G., Berkhout, G. C.G., Courtial, J., and Padgett, M. J.
College/School:College of Science and Engineering > School of Physics and Astronomy
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Journal of Optics
Publisher:Institute of Physics Publishing Ltd.
ISSN:2040-8978
ISSN (Online):2040-8986
Published Online:27 April 2011

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