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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 13 — May. 1, 2002
  • pp: 2461–2469

Stabilization by harmonic intensities for the output signal in heterodyne detection

Manabu Sato and Naohiro Tanno  »View Author Affiliations


Applied Optics, Vol. 41, Issue 13, pp. 2461-2469 (2002)
http://dx.doi.org/10.1364/AO.41.002461


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Abstract

We experimentally demonstrated that the technique to stabilize the output signal by harmonic intensities is useful in heterodyne detection with an incoherent light source such as a halogen lamp. The relation between the relative standard deviation of an output signal and the fluctuation of the light intensity is analyzed and simulated. Using the fundamental to sixth harmonics increases the stabilities of output signal approximately 3 times, and subtracting the relative standard deviation of the intensity of light source enhances the stabilities 49 times. The fluctuating phase that is due to the fluctuating frequency and temperature and its power spectrum density for an interferometer is also calculated with the Allan variance.

© 2002 Optical Society of America

OCIS Codes
(040.2840) Detectors : Heterodyne
(110.4500) Imaging systems : Optical coherence tomography
(120.1880) Instrumentation, measurement, and metrology : Detection
(170.3880) Medical optics and biotechnology : Medical and biological imaging

History
Original Manuscript: August 27, 2001
Revised Manuscript: December 11, 2001
Published: May 1, 2002

Citation
Manabu Sato and Naohiro Tanno, "Stabilization by harmonic intensities for the output signal in heterodyne detection," Appl. Opt. 41, 2461-2469 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-13-2461

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