Design and Operation of a Very Large Ring Laser Gyroscope
Applied Optics, Vol. 38, Issue 12, pp. 2516-2523 (1999)
http://dx.doi.org/10.1364/AO.38.002516
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Abstract
The design and initial operation of a vertical square He–Ne ring laser G0 with a perimeter of 14 m is discussed. This builds on earlier demonstrations of the feasibility of large ring lasers (perimeter ~4 m) for single-mode gyroscope operation and with lesser pulling than navigation gyroscopes. With servoing of the rf excitation to yield single-mode operation, G0 gave a quality factor 1 × 1012 and a Sagnac line with a frequency of 287.8 ∓ 1.0 Hz induced by Earth rotation ΩE. This has confirmed some vital questions over the feasibility of very large gyroscopes for geodetic measurements at the level of 10−9 ΩE.
© 1999 Optical Society of America
[Optical Society of America ]
OCIS Codes
(120.5790) Instrumentation, measurement, and metrology : Sagnac effect
(140.3370) Lasers and laser optics : Laser gyroscopes
(140.3560) Lasers and laser optics : Lasers, ring
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.4780) Lasers and laser optics : Optical resonators
(230.5750) Optical devices : Resonators
Citation
Clive H. Rowe, Ulrich K. Schreiber, Steven J. Cooper, B. Tom King, Morrie Poulton, and Geoffrey E. Stedman, "Design and Operation of a Very Large Ring Laser Gyroscope," Appl. Opt. 38, 2516-2523 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-12-2516
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