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Applied Optics

Applied Optics


  • Vol. 31, Iss. 30 — Oct. 20, 1992
  • pp: 6459–6462

Measurements of magnetic fields by a ring laser

J. Zhang, T. Feng, S. Zhang, and G. Jin  »View Author Affiliations

Applied Optics, Vol. 31, Issue 30, pp. 6459-6462 (1992)

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The principle of measuring magnetic fields with a ring laser system is discussed. The main source of error, the Zeeman effect, is studied, and a corresponding technique to reduce it is described. An experimental setup is developed with a Faraday cell of a large product of the Verdet constant and the length. The experimental device obtains a sensitivity of 0.5 nT and a stability of 2 nT.

© 1992 Optical Society of America

Original Manuscript: December 19, 1988
Published: October 20, 1992

J. Zhang, T. Feng, S. Zhang, and G. Jin, "Measurements of magnetic fields by a ring laser," Appl. Opt. 31, 6459-6462 (1992)

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  1. S. Zhang, T. Feng, Q. Tian, “Study of ring laser weak magnetic sensor,” Acta Geophys. Sin. (China) 29, 363–368 (1986).
  2. J. Zhang, “Measurements of weak magnetic fields using a ring laser: theory and system development,” Ph.D. dissertation (Tsinghua University, Beijing, 1988).
  3. W. E. Lamb, “Theory of an optical maser,” Phys. Rev.134, A1429–A1450 (1964). [CrossRef]
  4. L. N. Mengozzi, W. E. Lamb, “Theory of a ring laser,” Phys. Rev.8, A2103–A2125 (1973). [CrossRef]
  5. J. Zhang, “A technique for the alignment of a ring laser cavity,” Opt. Laser Technol. 20, 321–322 (1988). [CrossRef]
  6. J. Zhang, “Signal detection and frequency stabilization of a ring laser system for measuring magnetic fields,” Chin. Phys. Lasers 17, 73–78 (1990).

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