Height reconstruction algorithm for multi-incidence digital holography

Marta Mikuła , Tomasz Kozacki , Julianna Winnik , Michał Józwik , Juan Martinez-Carranza

Abstract

The aim of this work is to develop a holographic method that provides the shape reconstruction with high, interferometric accuracy and an extended measurement range. The method requires recording of a set of n holograms obtained for selected combination of illumination angles θn. The difference between the optical phases corresponding to on-axis φ0 and off-axis φn fields allows calculating the object height. To maintain high-accuracy evaluation of height the dedicated shape reconstruction algorithm is proposed. The algorithm consists of n steps, each with several substeps. Each substep is divided into: (1) calculation of the height from φ0 and φn; (2) propagation of the optical fields. In this paper, the proposed algorithm is numerically validated using three types of objects.
Author Marta Mikuła (FM / IMPh)
Marta Mikuła,,
- The Institute of Micromechanics and Photonics
, Tomasz Kozacki (FM / IMPh)
Tomasz Kozacki,,
- The Institute of Micromechanics and Photonics
, Julianna Winnik (FM / IMPh)
Julianna Winnik,,
- The Institute of Micromechanics and Photonics
, Michał Józwik (FM / IMPh)
Michał Józwik,,
- The Institute of Micromechanics and Photonics
, Juan Martinez-Carranza (FM / IMPh)
Juan Martinez-Carranza,,
- The Institute of Micromechanics and Photonics
Pages1083424-1 - 1083424-5
Publication size in sheets0.3
Book Jaroszewicz Leszek R., Kujawińska Małgorzata, Józwik Michał (eds.): Proceedings of SPIE, Speckle 2018: VII International Conference on Speckle Metrology, vol. 10834, 2018, ISBN 9781510622975
Keywords in Englishsurface contouring, multi-incidence digital holographic microscopy, microstructure, shape measurement
DOIDOI:10.1117/12.2319706
URL https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10834/1083424/Height-reconstruction-algorithm-for-multi-incidence-digital-holography/10.1117/12.2319706.full
Languageen angielski
Score (nominal)0
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