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GAS DYNAMICS IN ACTIVE MEDIUM AND BIAS INSTABILITY OF LASER GYROSCOPE

H. N. Dao, post-graduate student of the Department of industrial electronics, RSREU; This email address is being protected from spambots. You need JavaScript enabled to view it.
V. V. Klimakov, PhD (technical sciences), assistant professor of the Department of industrial electronics, RSREU; This email address is being protected from spambots. You need JavaScript enabled to view it.
A. V. Molchanov, PhD (technical sciences), assistant professor, department director of the JSC «Moscow institute of Electromechanics and Automatics»; This email address is being protected from spambots. You need JavaScript enabled to view it.
M. V. Chirkin, PhD (physical and mathematical sciences), full professor, Head of the Department of electronic devices, RSREU; This email address is being protected from spambots. You need JavaScript enabled to view it.
The paper presents the analysis of nonstationary gas flows inside the ring helium-neon laser in connection with the bias instability of laser gyro. Asymmetric perturbations of a bilateral glow discharge make it possible to investigate gas density oscillation in laser active medium. Instabilities in the emission of contamination atoms from discharge channel wall to gas mixture disturb Penning ionization frequency. Oscillations in ionization rate lead to electric power fluctuations, which are dissipated inside the positive column. As a result internal temperature variation changes the gas flow along the ring cavity axis even if discharge currents and environment temperature are stable.

Key words: ring laser, laser gyroscope, bias instability, bilateral discharge, positive column, Penning ionization.

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