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Applied Optics

Applied Optics


  • Vol. 41, Iss. 25 — Sep. 1, 2002
  • pp: 5313–5316

One-beam interferometer by beam folding

José A. Ferrari and Erna M. Frins  »View Author Affiliations

Applied Optics, Vol. 41, Issue 25, pp. 5313-5316 (2002)

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A novel one-beam interferometer based on beam folding is described. The device resembles a Mach–Zehnder interferometer in which the two arms are located together in one collimated beam. Different halves of the same beam interfere with the help of a mirror—with its reflecting surface along the axis of the optical system—placed near the focal plane of the imaging lens. Phase-delay control is achieved by application of an electrical potential to a Pockels cell, which permits the use of techniques of phase-stepping interferometry.

© 2002 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(260.5430) Physical optics : Polarization
(350.5030) Other areas of optics : Phase

Original Manuscript: December 17, 2001
Revised Manuscript: April 29, 2002
Published: September 1, 2002

José A. Ferrari and Erna M. Frins, "One-beam interferometer by beam folding," Appl. Opt. 41, 5313-5316 (2002)

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  1. M. Born, E. Wolf, Principles of Optics, 6th ed. (Pergamon, London, 1989), Chap. 7.
  2. R. Smartt, W. Steel, “Theory and applications of the point diffraction interferometer,” in Proceedings of the ICO Conference on Optical Methods in Science and Industrial Measurements, Jpn. J. Appl. Phys. Suppl. 14-1, 351–356 (1975).
  3. J. A. Ferrari, E. M. Frins, D. Perciante, A. Dubra, “Robust one-beam interferometer with phase-delay control,” Opt. Lett. 24, 1272–1274 (1999). [CrossRef]

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