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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 1 — Jan. 1, 1990
  • pp: 125–128

Sensitivity of Lau fringes to grating rotation: theoretical analysis

Sundergopal Chitralekha, Kodikullam V. Avudainayagam, and Sastry V. Pappu  »View Author Affiliations


Applied Optics, Vol. 29, Issue 1, pp. 125-128 (1990)
http://dx.doi.org/10.1364/AO.29.000125


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Abstract

Recently reported experimental results on the rotation sensitivity of Lau fringes to the spatial coherence of the source have been theoretically analyzed and explained on the basis of coherence theory. A theoretical plot of the rotation angle required for the Lau fringes to vanish is obtained as a function of the coherence length of the illumination used in the Lau experiment. The theoretical results compare well with the experimental observations. The analysis as well as the experiment could form the basis for a simple and easy measurement of the coherence length of the illumination in a plane.

© 1990 Optical Society of America

History
Original Manuscript: December 14, 1988
Published: January 1, 1990

Citation
Sundergopal Chitralekha, Kodikullam V. Avudainayagam, and Sastry V. Pappu, "Sensitivity of Lau fringes to grating rotation: theoretical analysis," Appl. Opt. 29, 125-128 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-1-125


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References

  1. E. Lau, “Beugungserscheinungen an Doppelrastern,” Ann. Phys. 6, 417–423 (1948). [CrossRef]
  2. J. O. Castaneda, E. E. Sicre, “Theta Modulation Decoder Based on the Lau effect,” Opt. Commun. 59, 87–91 (1986). [CrossRef]
  3. S. Chitralekha, K. V. Avudainayagam, S. V. Pappu, “Rotation Sensitivity of Lau fringes: an Analysis Based on Coherence Theory,” Opt. Laser Technol., in press.
  4. S. Chitralekha, K. V. Avudainayagam, S. V. Pappu, “Role of Spatial Coherence on the Rotation Sensitivity of Lau Fringes: an Experimental Study,” Appl. Opt. 28, 345–349 (1989). [CrossRef] [PubMed]
  5. J. W. Goodman, Statistical Optics (Academic, New York, 1985), pp. 207–222.

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