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Proceedings Paper

Reduction Of Beam Coupling In A Ring Laser Gyro By Doppler Shifting Of Scattered Light
Author(s): R. A. Patterson; B. Ljung; D. A. Smith
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Paper 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.

Paper Details

Date Published: 4 October 1984
PDF: 7 pages
Proc. SPIE 0487, Physics of Optical Ring Gyros, (4 October 1984); doi: 10.1117/12.943251
Show Author Affiliations
R. A. Patterson, The Singer Company (United States)
B. Ljung, The Singer Company (United States)
D. A. Smith, The Singer Company (United States)


Published in SPIE Proceedings Vol. 0487:
Physics of Optical Ring Gyros
Stephen F. Jacobs; Joseph E. Killpatrick; Virgil E. Sanders; Murray Sargent; Marlan O. Scully; James H. Simpson, Editor(s)

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