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Applied Optics

Applied Optics


  • Vol. 39, Iss. 16 — Jun. 1, 2000
  • pp: 2653–2657

Influence of unparallel grating planes in Talbot interferometry with cross gratings of different spatial frequencies in two directions

Qian Liu, Seiichi Kakuma, and Ryoji Ohba  »View Author Affiliations

Applied Optics, Vol. 39, Issue 16, pp. 2653-2657 (2000)

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The effects of an arbitrary small inclination between two cross gratings on the moiré fringes in Talbot interferometry are discussed when the frequencies of the grating differ in two perpendicular directions. We show that the small angles, α and β, by which the beam-splitter cross grating is rotated around the two axes parallel to the two perpendicular line directions of the cross grating, have a greater influence on the moiré fringes with cross gratings than that with one-dimensional gratings. A simple and practical detection method for the angles between the two unparallel grating planes in Talbot interferometry is also proposed. The theoretical analyses are proved by experimental results.

© 2000 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: October 28, 1999
Revised Manuscript: February 22, 2000
Published: June 1, 2000

Qian Liu, Seiichi Kakuma, and Ryoji Ohba, "Influence of unparallel grating planes in Talbot interferometry with cross gratings of different spatial frequencies in two directions," Appl. Opt. 39, 2653-2657 (2000)

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