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Applied Optics

Applied Optics


  • Vol. 34, Iss. 10 — Apr. 1, 1995
  • pp: 1692–1696

Current sensing using bismuth rare-earth iron garnet films

Michael Ko and Elsa Garmire  »View Author Affiliations

Applied Optics, Vol. 34, Issue 10, pp. 1692-1696 (1995)

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Ferrimagnetic iron garnet films are investigated as current-sensing elements. The Faraday effect within the films permits measurement of the magnetic field or current by a simple polarimetric technique. Polarized diffraction patterns from the films have been observed that arise from the presence of magnetic domains in the films. A physical model for the diffraction is discussed, and results from a mathematical analysis are in good agreement with the experimental observations. A method of current sensing that uses this polarized diffraction is demonstrated.

© 1995 Optical Society of America

Original Manuscript: June 8, 1994
Revised Manuscript: August 30, 1994
Published: April 1, 1995

Michael Ko and Elsa Garmire, "Current sensing using bismuth rare-earth iron garnet films," Appl. Opt. 34, 1692-1696 (1995)

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