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Optical Engineering

Investigation of phase specklegram characteristics
Author(s): Yaozu Song; Rudi Kulenovic; Manfred Groll
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Paper Abstract

The enhancement of a laser speckle photography technique by means of a modification of the film development procedure is presented. Using a holographic film, an amplitude specklegram can be changed to a phase specklegram. This conversion is achieved during the film development procedure by a controlled bleaching of the exposed film. The contrast and visibility of Young’s fringes reconstructed from a phase specklegram are better than those from an amplitude specklegram. The diffraction efficiency of a phase specklegram is greater than that of an amplitude specklegram. The experimental arrangement and the method to get a phase specklegram are described. The phase specklegram characteristics are presented in detail and experimental results are discussed.

Paper Details

Date Published: 1 December 1996
PDF: 6 pages
Opt. Eng. 35(12) doi: 10.1117/1.601117
Published in: Optical Engineering Volume 35, Issue 12
Show Author Affiliations
Yaozu Song, Tsinghua Univ. (China) and Univ. Stuttgart (China)
Rudi Kulenovic, Univ. Stuttgart (Germany)
Manfred Groll, Univ. Stuttgart (Germany)

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