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Proceedings Article

Quantitative determination of the optical properties of phase objects by using a real-time phase retrieval technique

[+] Author Affiliations
Johannes Frank

Cologne Univ. of Applied Sciences (Germany) and Humboldt-Univ. zu Berlin (Germany)

Guenther Wernicke

Humboldt-Univ. zu Berlin (Germany)

Jan Matrisch

RheinAhrCampus Remagen (Germany)

Sebastian Wette, Jan Beneke, Stefan Altmeyer

Cologne Univ. of Applied Sciences (Germany)

Proc. SPIE 8082, Optical Measurement Systems for Industrial Inspection VII, 80820N (May 26, 2011); doi:10.1117/12.889340
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From Conference Volume 8082

  • Optical Measurement Systems for Industrial Inspection VII
  • Peter H. Lehmann; Wolfgang Osten; Kay Gastinger
  • Munich, Germany | May 23, 2011

abstract

The transport-of-intensity equation (TIE) describes a deterministic relation between the intensity distribution in different focal planes and the corresponding phase distribution. A Green's function solution of the TIE is used to retrieve the phase distribution of an object considering specific boundary conditions. This leads to an accurate reconstruction of the properties of phase objects, e.g. the refractive indices and thus the numerical aperture (NA) of optical fibers. The required intensity distributions are captured simultaneously by the use of a multi-camera microscope. The TIE is solved using a computer algorithm, which can be massively parallelized. This offers the application of general purpose computation on graphics processing units (GPGPU). Therefore real-time reconstruction of the phase distribution is possible.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Johannes Frank ; Guenther Wernicke ; Jan Matrisch ; Sebastian Wette ; Jan Beneke, et al.
"Quantitative determination of the optical properties of phase objects by using a real-time phase retrieval technique", Proc. SPIE 8082, Optical Measurement Systems for Industrial Inspection VII, 80820N (May 26, 2011); doi:10.1117/12.889340; http://dx.doi.org/10.1117/12.889340


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