Generation of high-resolution dynamic wavefronts for speckle-based measurements of complex surface shapes

Laura M. Aulbach; Alexander W. Koch

doi:10.1117/12.2189471

24 August 2015 Generation of high-resolution dynamic wavefronts for speckle-based measurements of complex surface shapes

Laura M. Aulbach, Alexander W. Koch

Author Affiliations +

Proceedings Volume 9660, SPECKLE 2015: VI International Conference on Speckle Metrology; 96600Y (2015) https://doi.org/10.1117/12.2189471
Event: SPECKLE 2015: VI International Conference on Speckle Metrology, 2015, Guanajuato, Mexico

Abstract

Due to the modulo-2π periodicity of the interferometric principle and diffraction occurring at steep surface height variations, the electronic speckle-pattern interferometry (ESPI) is restricted generally to continuous surfaces with minor structural density. With a dynamic reference wavefront adapted to the measurement object, the resolution of steep or filigree areas is feasible. The problems of the generation of high-resolution dynamic wavefronts (HRDWs) will be discussed, and a new method for the realization is presented. This paper shows first simulation results for the generation of HRDWs and their possible applications in ESPI.

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Laura M. Aulbach and Alexander W. Koch "Generation of high-resolution dynamic wavefronts for speckle-based measurements of complex surface shapes", Proc. SPIE 9660, SPECKLE 2015: VI International Conference on Speckle Metrology, 96600Y (24 August 2015); https://doi.org/10.1117/12.2189471

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