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Proceedings Paper

Digital holographic tomography of phase objects
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Paper Abstract

Digital holography is one of the most versatile tools for the whole field imaging of wavefronts. Since numerical reconstruction provides both the amplitude and phase of the wavefronts it finds immense potential applications ranging from shape measurement to microscopy. The method is useful especially for phase objects, which otherwise does not produce any change in the amplitude of the interacting wavefront and hence is difficult to image. The wavefronts passing through a region having non-uniform refractive index distribution will carry the information about this distribution as a spatially varying phase. Digital holography can be used for measurement of this phase. Here the use of digital holographic interferometry coupled with tomography is investigated for mapping of spatially as well as temporally varying refractive index distributions.

Paper Details

Date Published: 17 June 2009
PDF: 9 pages
Proc. SPIE 7389, Optical Measurement Systems for Industrial Inspection VI, 73890L (17 June 2009); doi: 10.1117/12.827666
Show Author Affiliations
Arun Anand, The Maharaja Sayajirao Univ. of Baroda (India)
Vani K. Chhaniwal, Parul Institute of Engineering & Technology (India)
Giancarlo Pedrini, Univ. Stuttgart (Germany)
Wolfgang Osten, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 7389:
Optical Measurement Systems for Industrial Inspection VI
Peter H. Lehmann, Editor(s)

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