Efficient measurement of an optical orbital-angular-momentum spectrum comprising more than 50 states

Lavery, M.P.J.; Robertson, D.J.; Sponselli, A.; Courtial, J.; Steinhoff, N.K.; Tyler, G.A.; Wilner, A.E.; Padgett, M.J.

Abstract

A light beam may be separated into its orbital-angular momentum (OAM) components by a geometric optical transformation that converts each OAM component into a plane wave with a transverse phase gradient. Subsequent focusing produces a spot the lateral position of which is proportional to the input OAM state (Lavery et al 2012 Opt. Express 20 3). In this paper, we improve this approach, extending the measurement bandwidth to >50 OAM states and showing a simultaneous measurement of the radial coordinate.

Citation

Lavery, M., Robertson, D., Sponselli, A., Courtial, J., Steinhoff, N., Tyler, G., …Padgett, M. (2013). Efficient measurement of an optical orbital-angular-momentum spectrum comprising more than 50 states. New Journal of Physics, 15(1), Article 013024. https://doi.org/10.1088/1367-2630/15/1/013024

• Journal Article Type: Article
• Publication Date: Jan 14, 2013
• Deposit Date: Mar 19, 2013
• Publicly Available Date: Sep 11, 2015
• Journal: New Journal of Physics
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 15
• Issue: 1
• Article Number: 013024
• DOI: https://doi.org/10.1088/1367-2630/15/1/013024
• Public URL: https://durham-repository.worktribe.com/output/1464326