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Applied Optics

Applied Optics


  • Vol. 38, Iss. 19 — Jul. 1, 1999
  • pp: 4111–4116

Effects of unparallel grating planes in Talbot interferometry

Qian Liu and Ryoji Ohba  »View Author Affiliations

Applied Optics, Vol. 38, Issue 19, pp. 4111-4116 (1999)

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The properties of moiré fringes in Talbot interferometry are analyzed when the angle between the two grating planes is small. The results indicate that the tilt angle of the moiré fringes, observed just behind the test grating, is sensitive to the small angle. Based on this sensitivity, several features of parallelism of the two grating planes are presented, and the influence of the small angle when checking the beam collimation of a lens is also discussed. The validity of the theoretical analysis is illustrated by experiment.

© 1999 Optical Society of America

OCIS Codes
(120.1880) Instrumentation, measurement, and metrology : Detection
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques

Original Manuscript: December 22, 1998
Revised Manuscript: April 12, 1999
Published: July 1, 1999

Qian Liu and Ryoji Ohba, "Effects of unparallel grating planes in Talbot interferometry," Appl. Opt. 38, 4111-4116 (1999)

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