Experimental demonstration of the longitudinal image shift in digital holography

Year: 2003

Authors: De Nicola S., Ferraro P., Finizio A., Grilli S., Pierattini G.

Autors Affiliation: Istituto di Cibernetica “E. Caianiello” del CNR, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Istituto per la Microelettronica e i Microsistemi (IMM) del CNR, Via P. Castellino 111, 80134 Napoli, Italy;
Istituto Nazionale di Ottica Applicata, Sez. di Napoli, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy

Abstract: In digital holography, it is necessary to know the distance of the object from the recording charge-coupled device camera to obtain a correct numerical reconstruction process. The presence of a plane parallel plate along the path of the object beam, such as a beamsplitter cube, often used in interferometers, affects the actual reconstruction distance. This effect, to our knowledge, has never been discussed in the literature despite the fact that it adds a contribution that cannot be ignored in the reconstruction process. We evaluate the effect for a spherical object wavefront as well as in the case of an extended object. (C) 2003 Society of Photo-Optical Instrumentation Engineers.

Journal/Review: OPTICAL ENGINEERING

Volume: 42 (6)      Pages from: 1625  to: 1630

KeyWords: holography; fourier transform;
DOI: 10.1117/1.1569496

Citations: 10
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