Measurements of complex coupling coefficients in a ring resonator of a laser gyroscope

A method is proposed for measuring complex coupling coefficients in a ring optical resonator in the absence of an active gas mixture. A setup is described on which measurements are performed in ring resonators of ring He - Ne lasers with a wavelength of 632.8 nm. A model of backscattering field inte...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 47; no. 7; pp. 675 - 682
Main Authors Bessonov, A.S., Makeev, A.P., Petrukhin, E.A.
Format Journal Article
LanguageEnglish
Published Bristol Kvantovaya Elektronika, Turpion Ltd and IOP Publishing 01.08.2017
IOP Publishing
Subjects
BACKSCATTERING
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Coefficient of variation
Coupling coefficients
coupling coefficients of counterpropagating waves
Gas mixtures
GYROSCOPES
HELIUM-NEON LASERS
INTERFERENCE
laser gyroscope
Laser gyroscopes
lock-in threshold
Mathematical models
Optical resonators
PHASE SHIFT
RESONATORS
ring laser
ring resonator
WAVELENGTHS
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Summary:A method is proposed for measuring complex coupling coefficients in a ring optical resonator in the absence of an active gas mixture. A setup is described on which measurements are performed in ring resonators of ring He - Ne lasers with a wavelength of 632.8 nm. A model of backscattering field interference between conservative and dissipative sources is presented. Within the framework of this model, the unusual behaviour of backscattering fields in ring resonators observed in experiments is explained: a significant difference in the moduli of coupling coefficients of counterpropagating waves and variation of the magnitude of the total phase shift in a wide range. It is proposed to use this method as a metrological method when assembling and aligning a ring resonator of a laser gyroscope.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16291