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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 25 — Sep. 1, 1999
  • pp: 5384–5387

Direct determination of isochromatic fringe order by use of two wavelengths

Chang-Hua Hu  »View Author Affiliations


Applied Optics, Vol. 38, Issue 25, pp. 5384-5387 (1999)
http://dx.doi.org/10.1364/AO.38.005384


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Abstract

A method of direct determination of photoelastic fringe order is proposed. The relations between the integral fringe order for one wavelength and the fractional fringe orders of two wavelengths are derived. The exact fringe order of the whole field is automatically calculated. The usefulness of this method is demonstrated through experimental result.

© 1999 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.5710) Instrumentation, measurement, and metrology : Refraction

History
Original Manuscript: March 29, 1999
Revised Manuscript: June 21, 1999
Published: September 1, 1999

Citation
Chang-Hua Hu, "Direct determination of isochromatic fringe order by use of two wavelengths," Appl. Opt. 38, 5384-5387 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-25-5384


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References

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  10. L. S. Srinath, A. Sarma, “Determination of integral fringe order in photoelasticity,” Exper. Mech. 13, 138–141 (1973). [CrossRef]
  11. T. Y. Chen, “Digital determination of photoelastic birefringence using two wavelengths,” Exper. Mech. 37, 232–236 (1997). [CrossRef]
  12. C. H. Hu is preparing the following paper for publication: “Phase shifting method for whole-field isochromatics.”
  13. S. K. Lin, Z. H. Li, “Recognition of photoelastic isochromatic fringe order,” J. Exper. Mech. 5, 96–103 (1990) (in Chinese).

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