Burton, David A. and Noble, Adam and Tucker, Robin W. and Wiltshire, D. L. (2005) Twisted electromagnetic modes and Sagnac ring lasers. Classical and Quantum Gravity, 22 (6). pp. 909-931. ISSN 0264-9381Full text not available from this repository.
A new approximation scheme, designed to solve the covariant Maxwell equations inside a rotating hollow slender cavity (modelling a ring laser), is constructed. It is shown that for well-defined conditions there exist TE and TM modes with respect to the longitudinal axis of the cavity. 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. The analysis is motivated by attempts to use ring lasers to measure terrestrial gravito-magnetism or the Lense–Thirring effect produced by the rotation of the earth.
|Journal or Publication Title:||Classical and Quantum Gravity|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Ms Margaret Calder|
|Deposited On:||18 Jun 2008 14:36|
|Last Modified:||04 Dec 2016 02:02|
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