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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 14 — Jul. 15, 2013
  • pp: 17228–17233

Phase-shifting interferometry based on the lateral displacement of the light source

Carlos Robledo-Sanchez, Rigoberto Juarez-Salazar, Cruz Meneses-Fabian, Fermin Guerrero-Sánchez, L. M. Arévalo Aguilar, Gustavo Rodriguez-Zurita, and Viridiana Ixba-Santos  »View Author Affiliations

Optics Express, Vol. 21, Issue 14, pp. 17228-17233 (2013)

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A simple and inexpensive optical setup to phase-shifting interferometry is proposed. This optical setup is based on the Twyman-Green Interferometer where the phase shift is induced by the lateral displacement of the point laser source. A theoretical explanation of the induced phase by this alternative method is given. The experimental results are consistent with the theoretical expectations. Both, the phase shift and the wrapped phase are recovered by a generalized phase-shifting algorithm from two or more interferograms with arbitrary and unknown phase shift. The experimental and theoretical results show the feasibility of this unused phase-shifting technique.

© 2013 OSA

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: May 7, 2013
Manuscript Accepted: June 11, 2013
Published: July 11, 2013

Carlos Robledo-Sanchez, Rigoberto Juarez-Salazar, Cruz Meneses-Fabian, Fermin Guerrero-Sánchez, L. M. Arévalo Aguilar, Gustavo Rodriguez-Zurita, and Viridiana Ixba-Santos, "Phase-shifting interferometry based on the lateral displacement of the light source," Opt. Express 21, 17228-17233 (2013)

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