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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 28 — Oct. 1, 2008
  • pp: 5197–5200

Use of the circular Dammann grating in angle measurement

Fung Jacky Wen and Po Sheun Chung  »View Author Affiliations

Applied Optics, Vol. 47, Issue 28, pp. 5197-5200 (2008)

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We describe a novel method of angle measurement by borrowing the concept of the circular Dammann grating (CDG). A three-order CDG is employed in this experiment. The displacement of the tilted angle can be determined accurately by measuring the projection from the distorted CDG image. This method is controlled only by the initial radius of the image and the converging ratio of the lens. Compared with conventional techniques, this technique has the advantages of a simple design with superior resolution to within 1 ° , low cost, and compactness. A theoretical analysis together with experimental results is presented.

© 2008 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(140.3560) Lasers and laser optics : Lasers, ring
(220.4000) Optical design and fabrication : Microstructure fabrication

ToC Category:
Diffraction and Gratings

Original Manuscript: April 24, 2008
Manuscript Accepted: August 6, 2008
Published: September 29, 2008

Fung Jacky Wen and Po Sheun Chung, "Use of the circular Dammann grating in angle measurement," Appl. Opt. 47, 5197-5200 (2008)

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