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Home > Research > Publications & Outputs > Geometry, Sagnac ring lasers and twisted EM modes
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Geometry, Sagnac ring lasers and twisted EM modes

Research output: Contribution to journalJournal article

Published

Journal publication date09/2005
JournalGeneral Relativity and Gravitation
Journal number9
Volume37
Number of pages20
Pages1555-1574
Original languageEnglish

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.

Bibliographic note

The original publication is available at www.springerlink.com