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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

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Polarization and image rotation induced by a rotating dielectric rod: an optical angular momentum interpretation

Padgett, M. and Whyte, G. and Girkin, J. and Wright, A. and Allen, L. and Ohberg, P. and Barnett, S.M. (2006) Polarization and image rotation induced by a rotating dielectric rod: an optical angular momentum interpretation. Optics Letters, 31 (14). pp. 2205-2207. ISSN 0146-9592

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Abstract

When light is transmitted along the axis of a rotating glass rod, the polarization of the light is rotated through a small angle [Proc. R. Soc. London, Ser. A349, 423 (1976)]. Under the same conditions, we predict a rotation of the transmitted image by exactly the same angle. The treatment of the two effects in terms of light's spin and orbital angular momentum suggests that they share a common origin.