Reduction Of Beam Coupling In A Ring Laser Gyro By Doppler Shifting Of Scattered Light

R. A. Patterson; B. Ljung; D. A. Smith

doi:10.1117/12.943251

4 October 1984 Reduction Of Beam Coupling In A Ring Laser Gyro By Doppler Shifting Of Scattered Light

R. A. Patterson, B. Ljung, D. A. Smith

Proceedings Volume 0487, Physics of Optical Ring Gyros; (1984) https://doi.org/10.1117/12.943251
Event: Physics of Optical Ring Gyros, 1984, Snowbird, United States

Abstract

We report here the successful reduction of the lock-in band of a triangular ring laser gyro by dithering two flat diaphragm mirrors 180 degrees out of phase along their normals. This causes a frequency shift of the backscattered light of each beam out of the capture band of the counterpropagating beam. After properly matching the phase and amplitudes of the mirror drives we obtained a residual lock-in roughly two orders of magnitude below the undithered value. A quantitative explanation of this result is given.

Citation Download Citation

R. A. Patterson, B. Ljung, and D. A. Smith "Reduction Of Beam Coupling In A Ring Laser Gyro By Doppler Shifting Of Scattered Light", Proc. SPIE 0487, Physics of Optical Ring Gyros, (4 October 1984); https://doi.org/10.1117/12.943251

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