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Optics Letters

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  • Vol. 29, Iss. 11 — Jun. 1, 2004
  • pp: 1259–1260

Reply to comment on ''Phase-shift extraction and wave-front reconstruction in phase-shifting interferometry with arbitrary phase steps''

L. Z. Cai, Q. Liu, and X. L. Yang  »View Author Affiliations


Optics Letters, Vol. 29, Issue 11, pp. 1259-1260 (2004)
http://dx.doi.org/10.1364/OL.29.001259


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Abstract

In answer to the questions raised by Ferrari and Garbusi [Opt. Lett. 29, 1257 (2004)] we indicate that, even if the intensities of the object and reference waves can be measured, the phase-shifting procedure is still necessary for correct reconstruction of the object wave field. We also show that the statistical approximation used in our previous Letter [Opt. Lett. 28, 1808 (2003)], 〈|sinɕo (x, y)|〉=2/π , where ɕo(x, y) is the phase of a diffraction field and 〈〉 means average over the whole interferogram frame, is reasonable for most objects, including both smooth and diffusing surfaces, and that the method we proposed for phase-shift extraction is correct.

© 2004 Optical Society of America

OCIS Codes
(090.2880) Holography : Holographic interferometry
(100.2000) Image processing : Digital image processing
(100.3010) Image processing : Image reconstruction techniques
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

Citation
L. Z. Cai, Q. Liu, and X. L. Yang, "Reply to comment on ''Phase-shift extraction and wave-front reconstruction in phase-shifting interferometry with arbitrary phase steps''," Opt. Lett. 29, 1259-1260 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-11-1259


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