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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 3 — Feb. 1, 2011
  • pp: 331–333

Heterodyne interferometer scheme using a double pass in an acousto-optic modulator

Youngkyu Park and Kyuman Cho  »View Author Affiliations


Optics Letters, Vol. 36, Issue 3, pp. 331-333 (2011)
http://dx.doi.org/10.1364/OL.36.000331


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Abstract

We introduce a heterodyne interferometer scheme utilizing the double-pass arrangement of the deflected beams of an acousto-optic modulator. To prove our new idea, the interferometer has been applied for measuring small amplitude vibrations. The output intermediate frequency signal from the interferometer is processed by using an I/Q demodulator. In theory, it can provide the quantum noise limited sensitivity, whereas, in our present Letter, the sensitivity of the phase measurement is limited by the resolution of the 16   bit A/D converter used for processing the I/Q signals. Details of our interferometer scheme are discussed.

© 2011 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: October 5, 2010
Revised Manuscript: December 20, 2010
Manuscript Accepted: December 20, 2010
Published: January 24, 2011

Citation
Youngkyu Park and Kyuman Cho, "Heterodyne interferometer scheme using a double pass in an acousto-optic modulator," Opt. Lett. 36, 331-333 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-3-331

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