A novel method of decreasing the magnetic effect in four frequency differential laser gyro

Abstract

Abstract:

The magnetic effect is one of the important error sources to limit the precision of four frequency differential laser gyro. For the solution of this problem, the physics mechanism is analyzed from the operation principle of laser gyro, then a novel method of decreasing the magnetic effect is presented, which is different from the traditional magnetic shielding technology. Based on the concept of light intensity difference frequency stabilization, under more than degree of circuits precision, the most suitable frequency stabilization point can be chosen by changing the judging standard of frequency stabilization; at the same time, some pertinent measures are adopted to ensure the stability of the gyro parameters especially the total light intensity, therefore the magnetic sensitivity can be minimized effectively. The experiment results verify the validity of this method, which maybe helpful to researchers.

Key words: laser techniques, four frequency differential laser gyro, magnetic effect, light intensity difference frequency stabilization, frequency stabilization point

YANG Jian-qiang, LIAO Dan, Zhu Yong . A novel method of decreasing the magnetic effect in four frequency differential laser gyro[J]. J4, 2010, 27(5): 535-541.

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