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

Mcgloin, D, Simpson, NB, and Padgett, MJ (1998) Transfer Of Orbital Angular Momentum From A Stressed Fiber-Optic Waveguide To A Light Beam. Applied Optics, 37 (3). pp. 469-472. ISSN 0003-6935 (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:Article
Status:Published
Refereed:Yes
Glasgow Author(s):Padgett, Prof Miles
Authors: Mcgloin, D, Simpson, NB, and Padgett, MJ
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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