Zeeman Laser Gyro Sensors

Valentina Azarova, Yuriy Golyaev, Valentin Dmitriev, Alexander Mel’nikov, Mikhail Nazarenko, Vjacheslav Svirin, Nikolay Techmenev

Abstract:	This paper represents the results of investigation and development of Zeeman biasing Laser Gyro Sensors. The main difference between dither or rate biasing sensor types and Zeeman (or Faraday cell) biasing sensor types is the full absence of any movable parts in latter sensors, just as in the first sensors there are rather sensitive movable parts. This main difference causes also corresponding difference in areas of laser sensors applications. Due to full absence of any movable parts Zeeman laser sensors possess more higher mechanical and temperature stability and therefore they are more preferable for hard conditions of application, for example, high speed flying or swimming objects, guidance and control systems, railway measuring systems, bore hole control systems and so on. Developed in RDI “Polyus” series of Zeeman laser sensors are based on nonplane four mirrors resonator with He-Ne active medium. Zeeman effect is used in these sensors for creation of necessary frequency biasing. This effect is provided by means sign alternative longitudinal magnetic field along active medium channels. Due to high flexibility of magnetic field control system it is possible to choose optimum of magnetic field time function and therefore to minimize noise and nonlinearity components of output sensor characteristics. There were developed some types with magnetic biasing sensors: two-waves and four-waves ones. Four-waves sensors have more complicated design but they provide more smaller output noise and random walk and very small external magnetic field sensitivity.
Published in:	Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996) June 19 - 21, 1996 Royal Sonesta Hotel Cambridge, MA
Pages:	697 - 703
Cite this article:	Azarova, Valentina, Golyaev, Yuriy, Dmitriev, Valentin, Mel’nikov, Alexander, Nazarenko, Mikhail, Svirin, Vjacheslav, Techmenev, Nikolay, "Zeeman Laser Gyro Sensors," Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996), Cambridge, MA, June 1996, pp. 697-703.
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