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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 14 — Jul. 15, 1984
  • pp: 2296–2299

Measurements of phase objects using the Talbot effect and moiré techniques

Yoshiaki Nakano and Kazumi Murata  »View Author Affiliations


Applied Optics, Vol. 23, Issue 14, pp. 2296-2299 (1984)
http://dx.doi.org/10.1364/AO.23.002296


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Abstract

In this paper, we describe deflection mapping of phase objects using a Talbot interferometer. To examine the deflection of light by the phase objects, the moiré fringes are generated by superimposing the Fourier image of the first grating on the second one in the interferometer. The phase object is placed in front of the first grating. The light passing through the objects and impinging on the first grating produces the shifted Fourier image, and the resultant moiré fringes give the deflection mapping, which depends on the distribution of the refractive index of the phase object. The experiments show deflection mapping of a piece of plastic plate and a candle flame. This technique is used for measuring the focal length of a lens.

© 1984 Optical Society of America

History
Original Manuscript: November 30, 1983
Published: July 15, 1984

Citation
Yoshiaki Nakano and Kazumi Murata, "Measurements of phase objects using the Talbot effect and moiré techniques," Appl. Opt. 23, 2296-2299 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-14-2296

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