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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 23 — Dec. 1, 2012
  • pp: 5024–5026

Nonreciprocal feedback in a ring laser and its application

Zhiguo Wang and Fei Wang  »View Author Affiliations

Optics Letters, Vol. 37, Issue 23, pp. 5024-5026 (2012)

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We reported the feedback characteristics of a ring laser with nonreciprocal feedback configuration. The clockwise/counterclockwise laser output is reflected and then reinjected into the cavity with the same direction. A nonreciprocal device composed of two quarter-wave plates and a Faraday rotator is placed in the feedback path so as to form a nonreciprocal feedback configuration. The beat frequency of the ring laser depends on the parameters of optical components in the nonreciprocal feedback path. As a result, it provides a new method for self-mixing interferometry. We discussed the possibility to use the nonreciprocal feedback to bias the ring laser, which, to our knowledge, is a novel optical biasing method.

© 2012 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(140.3370) Lasers and laser optics : Laser gyroscopes
(140.3560) Lasers and laser optics : Lasers, ring

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 13, 2012
Revised Manuscript: October 25, 2012
Manuscript Accepted: October 25, 2012
Published: November 30, 2012

Zhiguo Wang and Fei Wang, "Nonreciprocal feedback in a ring laser and its application," Opt. Lett. 37, 5024-5026 (2012)

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