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Applied Optics

Applied Optics


  • Vol. 34, Iss. 8 — Mar. 10, 1995
  • pp: 1401–1406

Phase reconstruction and unwrapping from holographic interferograms of partially absorbent phase objects

Ralf Vandenhouten and Reinhard Grebe  »View Author Affiliations

Applied Optics, Vol. 34, Issue 8, pp. 1401-1406 (1995)

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A method for automated phase reconstruction from holographic interferograms of nonideal phase objects based on a two-dimensional Fourier transform is described. In particular, the problem of phase unwrapping is solved because earlier techniques are inappropriate for the phase unwrapping from interferograms of partially absorbent objects. A noise-level-dependent criterion for the binary mask that defines the unwrapping path for the flood algorithm is derived. The method shows high noise immunity, and the result is reliable provided that the true phase is free of discontinuities. The phase distribution in the outmasked regions is estimated by a linear least-squares fit to the surrounding unwrapped pixels.

© 1995 Optical Society of America

Original Manuscript: March 3, 1994
Revised Manuscript: October 11, 1994
Published: March 10, 1995

Ralf Vandenhouten and Reinhard Grebe, "Phase reconstruction and unwrapping from holographic interferograms of partially absorbent phase objects," Appl. Opt. 34, 1401-1406 (1995)

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