Scientific Results

Infrared digital reflective-holographic 3D shape measurements

Year: 2008

Authors: De Nicola S., Ferraro P., Grilli S., Miccio L., Meucci R., Buah-Bassuah P.K., Arecchi F.T.

Autors Affiliation: CNR – Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
CNR – Istituto di Cibernetica “E. Caianiello” Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
CNR -Istituto Nazionale di Ottica Applicata, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Physics Dep., University of Cape Coast, Cape Coast Ghana;
Physics Dep., University of Firenze, Italy

Abstract: We present a series of experiments to demonstrate digital holography on reflective objects at wavelength 10.6 mu m of a CO2 laser using a pyrocam array. Fresnel holograms of reflective objects are recorded by a Mach-Zehnder interferometer. We describe a method for improving the accuracy of the numerical reconstructions and for compensating the loss of resolution at longer wavelength by Fresnel reconstruction of digitally recorded infrared holograms. (c) 2007 Elsevier B.V. All rights reserved.


Volume: 281 (6)      Pages from: 1445  to: 1449

More Information: P.K.B.B. acknowledges Abdus Salam International Centre for Theoretical Physics (ICTP) TRIL programme for financial support at CNR-INOA in Firenze. This paper is being partly supported by the Grant of the project of Dinamiche Caotiche Celebrali by Ente Cassa di Risparmio di Firenze to the Physics Department of University of Firenze, Firenze.
KeyWords: Carbon dioxide; Holography; Mach-Zehnder interferometers; Numerical methods; Three dimensional; Wavelength, Digital holography; Numerical reconstructions; Reflective objects, Holographic gratings
DOI: 10.1016/j.optcom.2007.11.059

Citations: 30
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