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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 28 — Oct. 1, 1999
  • pp: 5931–5935

Phase-shifting method with a normal polariscope

Anand Asundi, Liu Tong, and Chai Gin Boay  »View Author Affiliations


Applied Optics, Vol. 38, Issue 28, pp. 5931-5935 (1999)
http://dx.doi.org/10.1364/AO.38.005931


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Abstract

In many laboratories of universities and industrial organizations, commercial polariscopes have the feature that the relative position of the two quarter-wave plates is fixed. This is due to the requirement of transforming a plane polariscope to a circular polariscope with greater precision and ease. Unfortunately, these polariscopes cannot implement Patterson and Wang’s [Strain 27, 49–56 (1991)] phase-shifting algorithm because this algorithm requires that the second quarter-wave plate and the analyzer of the circular polariscope be capable of independent rotation. A new phase-shifting method that can be applied under these constraints is proposed. A comparative study with Patterson and Wang’s [Strain 27, 49–56 (1991)] algorithm shows very good agreement. Furthermore, it is shown that four phase steps are sufficient to determine both the isoclinic and the isochromatic parameters.

© 1999 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(100.5010) Image processing : Pattern recognition
(110.2960) Imaging systems : Image analysis
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis

History
Original Manuscript: April 5, 1999
Revised Manuscript: June 15, 1999
Published: October 1, 1999

Citation
Anand Asundi, Liu Tong, and Chai Gin Boay, "Phase-shifting method with a normal polariscope," Appl. Opt. 38, 5931-5935 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-28-5931


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References

  1. F. W. Hecker, B. Morche, “Computer-aided measurement of relative retardation in plane photoelasticity,” in Experimental Stress Analysis, H. Wieringa, ed. (Martinus Nijhoff, Dordrecht, the Netherlands), pp. 535–542.
  2. E. A. Patterson, Z. F. Wang, “Toward full-field automated photoelastic analysis of complex components,” Strain 27, 49–56 (1991). [CrossRef]
  3. A. V. S. S. S. R. Sarma, S. A. Pillai, G. Subramanian, T. K. Varadan, “Computerized image processing for whole-field automated determination of isoclinics and isochromatics,” Exp. Mech. 32, 24–39 (1992). [CrossRef]
  4. A. Asundi, “Phase shifting in photoelasticity,” Exp. Tech. 17, 19–23 (1993). [CrossRef]
  5. K. Ramesh, V. Ganapathy, “Phase-shifting methodologies in photoelastic analysis–the application of Jones calculus,” J. Strain Anal. 31, 423–432 (1996). [CrossRef]
  6. N. Plouzennec, J.-C. Dupre, A. Logarde, “Whole field determination of isoclinic and isochromatic parameters,” Exp. Tech. 23, 30–32 (1999). [CrossRef]

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