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Proceedings Paper

Speckle displacement in holographic and speckle metrology
Author(s): Ichirou Yamaguchi; Koichi Kobayashi
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Paper Abstract

Speckle patterns appearing in laser-illumination of a rough surface show dynamic changes when the surface is deformed or illumination is moved. This change is characterized by correlation functions of speckle intensities before and after the change. After their explicit expressions are introduced, applications for measurement of plant growth and an extensometer are described. Digital holography provides 3-dimensional distributions of the correlation functions from which new developments are opened such as noise suppression and simplification of optical systems.

Paper Details

Date Published: 3 November 2011
PDF: 10 pages
Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80118D (3 November 2011); doi: 10.1117/12.903611
Show Author Affiliations
Ichirou Yamaguchi, Toyo Seiki Seisaku-sho, Ltd. (Japan)
Koichi Kobayashi, Toyo Seiki Seisaku-sho, Ltd. (Japan)


Published in SPIE Proceedings Vol. 8011:
22nd Congress of the International Commission for Optics: Light for the Development of the World

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