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Geometry, Sagnac ring lasers and twisted EM modes

Tucker, Robin W. and Burton, David A. and Noble, Adam (2005) Geometry, Sagnac ring lasers and twisted EM modes. General Relativity and Gravitation, 37 (9). pp. 1555-1574. ISSN 0001-7701

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Abstract

A new geometric approximation scheme, designed to solve the covariant Maxwell equations inside a rotating hollow slender conducting cavity (modelling a ring-laser) on a background spacetime, is constructed. It is shown that for well-defined conditions the electromagnetic spectrum splits into TE- and TM-type modes. A twisted mode spectrum is found to depend on the integrated Frenet torsion of the cavity and this in turn may affect the Sagnac beat frequency induced by a non-zero rotation of the cavity.

Item Type: Article
Journal or Publication Title: General Relativity and Gravitation
Additional Information: The original publication is available at www.springerlink.com
Uncontrolled Keywords: Frenet torsion - Cavity - Sagnac beat frequency
Subjects: UNSPECIFIED
Departments: Faculty of Science and Technology > Physics
ID Code: 9663
Deposited By: Ms Margaret Calder
Deposited On: 18 Jun 2008 14:27
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:20
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9663

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