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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 12 — Apr. 20, 1999
  • pp: 2516–2523

Design and operation of a very large ring laser gyroscope

Clive H. Rowe, Ulrich K. Schreiber, Steven J. Cooper, B. Tom King, Morrie Poulton, and Geoffrey E. Stedman  »View Author Affiliations


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 Ω E . This has confirmed some vital questions over the feasibility of very large gyroscopes for geodetic measurements at the level of 10-9 Ω E .

© 1999 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

History
Original Manuscript: July 13, 1998
Revised Manuscript: December 21, 1998
Published: April 20, 1999

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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