Transfer Of Orbital Angular Momentum From A Stressed Fiber-Optic Waveguide To A Light Beam

Mcgloin, D., Simpson, N. and Padgett, M. (1998) Transfer Of Orbital Angular Momentum From A Stressed Fiber-Optic Waveguide To A Light Beam. Applied Optics, 37(3), pp. 469-472. (doi: 10.1364/AO.37.000469)

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Abstract

A stressed fiber-optic waveguide is used to impart orbital angular momentum to a Hermite-Gaussian (HG(10)) laser mode. The transmitted beam has an annular intensity profile and a well-defined azimuthal phase dependence. We confirm the phase structure of the beam by observing the interference pattern produced between it and a plane wave. The transfer of the angular momentum to the light occurs because of a difference in phase velocity within the fiber for two orthogonal modes that comprise the input beam. This represents a mechanism for the transfer of orbital angular momentum to a light beam that has not hitherto been identified.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles
Authors: Mcgloin, D., Simpson, N., and Padgett, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Applied Optics
Journal Abbr.:Appl. Optics
ISSN:0003-6935

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