Combined digital speckle photography (DSP) and interferometry

Nils-Erik Molin; Angelica Svanbro; Per Gren; Mikael Sjoedahl

doi:10.1117/12.429579

13 June 2001 Combined digital speckle photography (DSP) and interferometry

Nils-Erik Molin, Angelica Svanbro, Per Gren, Mikael Sjoedahl

Proceedings Volume 4317, Second International Conference on Experimental Mechanics; (2001) https://doi.org/10.1117/12.429579
Event: Second International Conference on Experimental Mechanics, 2000, Singapore, Singapore

Abstract

A general problem in optical metrology is to measure a deformation field when this field is added to a translation or a rotational motion. Methods like Speckle Photography (SP) do handle large rigid body motions but the result might be of too poor accuracy to resolve the deformation field. Interferometric methods on the other hand might measure the deformation field but the bulk motion makes the fringes disappear. By combining digital speckle photography, with Speckle Interferometry, or with shearography, such measuring situations can be mastered.

Citation Download Citation

Nils-Erik Molin, Angelica Svanbro, Per Gren, and Mikael Sjoedahl "Combined digital speckle photography (DSP) and interferometry", Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); https://doi.org/10.1117/12.429579

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