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Proceedings Paper

The measurement and generation of orbital angular momentum using an optical geometric transformation
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Paper Abstract

Previously we have demonstrated that the orbital angular momentum (OAM) of the light beam may be measured by image transformation that maps the azimuthal to linear transverse co-ordinate (Berkhout et al 2010 Phys. Rev. Lett. 105 153601). For each input OAM state the transmitted light is focused to a different transverse position enabling simultaneous measurement over many states. We present a significant improvement to our earlier design, extending the measurement bandwidth to greater than 50 OAM states and showing simultaneous measurement of the radial co-ordinate. We further demonstrate the transformation working in reverse, potentially allowing for the rapid switching of OAM modes.

Paper Details

Date Published: 19 March 2013
PDF: 7 pages
Proc. SPIE 8610, Free-Space Laser Communication and Atmospheric Propagation XXV, 86100J (19 March 2013); doi: 10.1117/12.2004534
Show Author Affiliations
Martin P. J. Lavery, Univ. of Glasgow (United Kingdom)
Andrew Fraine, Boston Univ. (United States)
David Roberston, Durham Univ. (United Kingdom)
Alexander Sergienko, Boston Univ. (United States)
Johannes Courtial, Univ. of Glasgow (United Kingdom)
Alan E. Wilner, The Univ. of Southern California (United States)
Miles J. Padgett, Univ. of Glasgow (United Kingdom)

Published in SPIE Proceedings Vol. 8610:
Free-Space Laser Communication and Atmospheric Propagation XXV
Hamid Hemmati; Don M. Boroson, Editor(s)

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