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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 19 — Jul. 1, 2013
  • pp: 4549–4555

Research on the thermal relaxation effect of nonplanar four-frequency differential laser gyro

Guochen Wang, Guyin Rao, Songlai Han, Mei Zhang, and Baolun Yuan  »View Author Affiliations


Applied Optics, Vol. 52, Issue 19, pp. 4549-4555 (2013)
http://dx.doi.org/10.1364/AO.52.004549


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Abstract

The nonplanar four-frequency differential laser gyro (NFFDLG, also called ZLG in the United States) has many advantages, such as the absence of mechanical noise, a whole solid state, high stability of scale factor, and no time delay. Because of its excellent performance, NFFDLG is currently the subject of research. In this paper, the error induced by the thermal relaxation effect is investigated both theoretically and experimentally, and some methods and conclusions that could restrain this error effectively are proposed. The experiment data confirm reliably that NFFDLG has a thermal relaxation effect error during overturning. At the same time, it is pointed out that the error can be minimized by reducing the stop interval. Furthermore, since the sum frequency could be affected more seriously by the overturning thermal relaxation effect than the difference frequency could, the former one can be used as one more sensitive condition in actual applications. As far as we know, the overturning thermal relaxation effect was first investigated in China, which is even not mentioned publicly.

© 2013 Optical Society of America

OCIS Codes
(140.3370) Lasers and laser optics : Laser gyroscopes
(140.3560) Lasers and laser optics : Lasers, ring

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: March 6, 2013
Manuscript Accepted: May 15, 2013
Published: June 26, 2013

Citation
Guochen Wang, Guyin Rao, Songlai Han, Mei Zhang, and Baolun Yuan, "Research on the thermal relaxation effect of nonplanar four-frequency differential laser gyro," Appl. Opt. 52, 4549-4555 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-19-4549


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References

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