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Optics Letters

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  • Vol. 12, Iss. 4 — Apr. 1, 1987
  • pp: 233–235

Digital phase-measuring interferometry with a tunable laser diode

Yukihiro Ishii, Jun Chen, and Kazumi Murata  »View Author Affiliations


Optics Letters, Vol. 12, Issue 4, pp. 233-235 (1987)
http://dx.doi.org/10.1364/OL.12.000233


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Abstract

A digital phase-measuring interferometer with a laser-diode source has been developed that is based on a fringe-scanning technique with a stepwise wavelength change by variation of the laser injection current. The phase is changed to produce a relative phase difference between the beams in the two arms of the interferometer. Calibrated phase shifts used for a phase-extraction algorithm are derived from one-dimensional least-squares fits to cosine fringe functions to achieve accurate results. Experimental results are presented.

© 1987 Optical Society of America

History
Original Manuscript: October 8, 1986
Manuscript Accepted: January 12, 1987
Published: April 1, 1987

Citation
Yukihiro Ishii, Jun Chen, and Kazumi Murata, "Digital phase-measuring interferometry with a tunable laser diode," Opt. Lett. 12, 233-235 (1987)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-12-4-233


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