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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 8 — Aug. 1, 2006
  • pp: 1951–1959

Aberration effects in two-beam laser interferometers

Giovanni Cavagnero, Giovanni Mana, and Enrico Massa  »View Author Affiliations

JOSA A, Vol. 23, Issue 8, pp. 1951-1959 (2006)

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In displacement measurements by two-beam interferometers, the wavefront curvature of a laser beam causes a systematic increase of the fringe period. This increase depends on beam collimation: It is null for a plane wave and proportional to the squared divergence of the beam. With interfering beams not perfectly recombined, an additional fringe-period error is caused, with the effect of counteracting and also of compensating for and prevailing over the usual error. We describe this hitherto unsuspected effect and give a correction equation.

© 2006 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(260.1960) Physical optics : Diffraction theory

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: December 19, 2005
Manuscript Accepted: February 8, 2006

Giovanni Cavagnero, Giovanni Mana, and Enrico Massa, "Aberration effects in two-beam laser interferometers," J. Opt. Soc. Am. A 23, 1951-1959 (2006)

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