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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 27, Iss. 8 — Apr. 15, 2002
  • pp: 619–621

Elimination of heterodyne interferometer nonlinearity by carrier phase modulation

Serge Dubovitsky, Oliver P. Lay, and David J. Seidel  »View Author Affiliations


Optics Letters, Vol. 27, Issue 8, pp. 619-621 (2002)
http://dx.doi.org/10.1364/OL.27.000619


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Abstract

Accuracy in measuring displacement in optical interferometers is limited by cyclic errors introduced by various leakage paths within the system. Existing techniques to reduce this nonlinearity do not work when there is large optical loss in the target path, such as for long-range measurements. We describe a new approach to reducing nonlinearity that overcomes these limitations. Based on phase modulation of the laser light, and requiring minimal additional components, experiments have demonstrated rejection of the effects of leakage in the presence of large optical loss.

© 2002 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5060) Instrumentation, measurement, and metrology : Phase modulation

Citation
Serge Dubovitsky, Oliver P. Lay, and David J. Seidel, "Elimination of heterodyne interferometer nonlinearity by carrier phase modulation," Opt. Lett. 27, 619-621 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-8-619


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References

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