Periodic faraday bias and lock-in phenomena in a laser gyro.
A simple theoretical description of coupling phenomena in a laser gyro has been developed. In particular, this allows the calculation of the residual nonlinearity of the response of the laser gyro in the presence of a periodic bias. A laser gyro has been constructed in a CER-VIT block. To solve the lock-in zone problem this detector contains a periodic bias system using the Faraday effect. The results of a number of trials are reported. In particular, we obtain experimental values of residual error due to coupling phenomena for each rotational speed. These results are in good agreement with a simple coupled oscillators theory.
Roland
J J
JJ
Lamarre
J M
JM