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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 2 — Jan. 23, 2006
  • pp: 644–654

Accurate wide-range displacement measurement using tunable diode laser and optical frequency comb generator

Youichi Bitou, Thomas R. Schibli, and Kaoru Minoshima  »View Author Affiliations

Optics Express, Vol. 14, Issue 2, pp. 644-654 (2006)

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A laser-frequency-based displacement measurement system with sub-nanometer uncertainty using an optical frequency comb generator is developed. In this method, the optical frequency of a tunable laser is locked to the resonance of a Fabry-Perot cavity. One of the two mirrors of this Fabry-Perot cavity is connected to the element whose displacement is to be measured. Wide range optical frequency and displacement measurements were realized by using an optical frequency comb generator, which consists of an electro-optic modulator placed inside of an optical resonator. We demonstrate a displacement measurement of up to 10 μm with 220 pm uncertainty under the stable condition.

© 2006 Optical Society of America

OCIS Codes
(120.3890) Instrumentation, measurement, and metrology : Medical optics instrumentation
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing

ToC Category:
Instrumentation, Measurement, and Metrology

Youichi Bitou, Thomas R. Schibli, and Kaoru Minoshima, "Accurate wide-range displacement measurement using tunable diode laser and optical frequency comb generator," Opt. Express 14, 644-654 (2006)

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