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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 10 — Apr. 1, 2011
  • pp: 1446–1452

Automated collimation testing by incorporating the Fourier transform method in Talbot interferometry

Jitendra Dhanotia and Shashi Prakash  »View Author Affiliations


Applied Optics, Vol. 50, Issue 10, pp. 1446-1452 (2011)
http://dx.doi.org/10.1364/AO.50.001446


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Abstract

In this paper, we report an automated technique for collimation testing by incorporating Fourier fringe analysis of the recorded interferograms in Talbot interferometry. The triangular profile of Talbot interferometric fringes has been recorded using a CCD and computer system. The interferograms corresponding to the in-focus, at-focus, and out-of-focus positions of the collimating lens have been recorded. Direct phase measurement using the Fourier transform method has been used for detection of collimation positions. Good accuracy and precision in measurement have been achieved.

© 2011 Optical Society of America

OCIS Codes
(070.6760) Fourier optics and signal processing : Talbot and self-imaging effects
(100.2650) Image processing : Fringe analysis
(120.1680) Instrumentation, measurement, and metrology : Collimation
(070.2465) Fourier optics and signal processing : Finite analogs of Fourier transforms

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: October 26, 2010
Revised Manuscript: December 30, 2010
Manuscript Accepted: February 15, 2011
Published: March 30, 2011

Citation
Jitendra Dhanotia and Shashi Prakash, "Automated collimation testing by incorporating the Fourier transform method in Talbot interferometry," Appl. Opt. 50, 1446-1452 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-10-1446

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