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Proceedings Paper

Finite aperture Fraunhofer holograms of two coplanar discs
Author(s): Peter R. Hobson; A. Raouf
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Paper Abstract

In this paper we present a theoretical model describing the real images replayed from finite aperture Fraunhofer holograms of two identical co-planar objects. We have solved numerically the resulting image equations for the case of two circular disc objects, and compare our predictions with experimental measurements from in-line Fraunhofer holograms recorded on silver-halide emulsions. Three measurement criteria for calculating the disc diameters and separation are described, and their errors discussed. It is found experimentally that a criterion based on average intensity results in the smallest errors due to its insensitivity to the effects of coherent noise.

Paper Details

Date Published: 2 March 1993
PDF: 14 pages
Proc. SPIE 1732, Holographics International '92, (2 March 1993); doi: 10.1117/12.140459
Show Author Affiliations
Peter R. Hobson, Brunel Univ. (United Kingdom)
A. Raouf, Brunel Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 1732:
Holographics International '92

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