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Proceedings Paper

Generation of fractal speckle using computer-generated holograms and its application to speckle correlometry
Author(s): Hideki Funamizu; Masayuki Kagawa; Yukihiro Ishii
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Paper Abstract

When a diffuser is illuminated by the coherent light with intensity distributions obeying a negative power law, speckle fields with fractal properties are produced. Such a random field is called fractal speckles. Fractal speckles have extremely long spatial correlation functions of the intensity distributions in comparison with ordinary speckles. It implies that fractal speckles may extend measurement ranges in various metrological applications based on the spatial correlation of speckles. We report the generation of fractal speckles using computer-generated holograms based on the method of stationary phase and the iterative Fourier transform algorithm, and its application to speckle correlometry is discussed.

Paper Details

Date Published: 3 February 2009
PDF: 8 pages
Proc. SPIE 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 71571Q (3 February 2009); doi: 10.1117/12.816125
Show Author Affiliations
Hideki Funamizu, Tokyo Univ. of Science (Japan)
Masayuki Kagawa, Tokyo Univ. of Science (Japan)
Yukihiro Ishii, Tokyo Univ. of Science (Japan)


Published in SPIE Proceedings Vol. 7157:
2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications
Anbo Wang; YanBiao Liao; AiGuo Song; Yukihiro Ishii; Xudong Fan, Editor(s)

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