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Optics Letters

Optics Letters


  • Vol. 6, Iss. 11 — Nov. 1, 1981
  • pp: 569–571

Passive ring resonator method for sensitive inertial rotation measurements in geophysics and relativity

G. A. Sanders, M. G. Prentiss, and S. Ezekiel  »View Author Affiliations

Optics Letters, Vol. 6, Issue 11, pp. 569-571 (1981)

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As part of a program to develop sensitive laser inertial rotation sensors, we have studied the performance of a passive-resonator technique using a 0.7-m × 0.7-m optical cavity. For an averaging time τ of 10 sec, the random drift was 1.1 × 10−2 deg/h, which was consistent with the shot-noise limit for the present setup. For a longer averaging time the random drift was 5.6 × 10−3 deg/h (τ = 90 sec), showing a slight departure from the shot-noise limit. The problems encountered in the present apparatus, as well as those that are critical in the development of much larger resonators for geophysics and relativity applications, are discussed.

© 1981 Optical Society of America

Original Manuscript: August 3, 1981
Published: November 1, 1981

G. A. Sanders, M. G. Prentiss, and S. Ezekiel, "Passive ring resonator method for sensitive inertial rotation measurements in geophysics and relativity," Opt. Lett. 6, 569-571 (1981)

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