Difference displacement measurement using digital holography

A new digital holography method for the measurement of difference of displacements is presented, which is based on a pointwise non-linear mathematical operation in the image plane. The method can measure sum of displacements too. Basic principles and experimental verification are described. Some experiments concerning the measuring range of the method were performed. A new approach, named artificial phase-shifting, producing phase-shifted interferograms without use of an actual phase-shifting device in the experiment, is also presented.

[1]  U. Schnars.  Direct phase determination in hologram interferometry with use of digitally recorded holograms , 1994 .

[2]  Wolfgang Osten,et al.  Direct shape measurement by digital wavefront reconstruction and multi-wavelength contouring , 2000 .

[3]  J. Goodman.  Introduction to Fourier optics , 1969 .

[4]  Mark A. Neifeld,et al.  Wave front reconstruction by means of phase-shifting digital in-line holography , 2000 .

[5]  Werner P. O. Jueptner,et al.  Digital in-line holography in particle measurement , 1999, Other Conferences.

[6]  N. Bokor,et al.  Monte Carlo method in computer holography , 1997 .

[7]  Giancarlo Pedrini,et al.  Shape measurement of microscopic structures using digital holograms , 1999 .

[8]  I. Yamaguchi,et al.  Three-dimensional microscopy with phase-shifting digital holography. , 1998, Optics letters.

[9]  H J Tiziani,et al.  Pulsed digital holography for high-speed contouring that uses a two-wavelength method. , 1999, Applied optics.

[10]  R. W. Lawrence,et al.  Digital Image Formation From Electronically Detected Holograms , 1967 .

[11]  T. Kreis,et al.  Hologram reconstruction using a digital micromirror device , 2001 .

[12]  H J Tiziani,et al.  Pulsed digital holographic interferometry with 694- and 347-nm wavelengths. , 2000, Applied optics.

[13]  Malgorzata Kujawinska,et al.  Concept of optical reconstruction of digitally stored holograms , 1999, Other Conferences.

[14]  A Finizio,et al.  Whole optical wavefields reconstruction by digital holography. , 2001, Optics express.

[15]  Ichirou Yamaguchi,et al.  Phase-shifting digital holography , 1997 .