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Proceedings Paper

Multi-spectral speckles: theory and applications
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Paper Abstract

The objective of this paper is to discuss the properties and a few applications of multi-spectral speckles. The paper starts with a theoretical section where the correlation properties of multi-spectral speckles are detailed for the case of reflective imaging geometry. Both a free-space geometry and an imaging geometry are detailed. As an application example effects and possibilities provided by the theory in a measurement of surface shape of a generally shaped object from a dual-wavelength holographic recording are detailed. It is showed that the same phase profile is obtained from integration of speckle movements and phase unwrapping and they are therefore exchangeable quantities.

Paper Details

Date Published: 25 September 2012
PDF: 10 pages
Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 841306 (25 September 2012); doi: 10.1117/12.981665
Show Author Affiliations
Mikael Sjödahl, Luleå Univ. of Technology (Sweden)
Emil Hallstig, Optronic (Sweden)
Davood Khodadad, Luleå Univ. of Technology (Sweden)


Published in SPIE Proceedings Vol. 8413:
Speckle 2012: V International Conference on Speckle Metrology
Ángel Fernandez Doval; Cristina Trillo, Editor(s)

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