Scientific Results

Optical reconstruction of digital holograms recorded at 10.6 mu m: route for 3D imaging at long infrared wavelengths

Year: 2010

Authors: Paturzo M., Pelagotti A., Finizio A., Miccio L., Locatelli M., Gertrude A., Poggi P., Meucci R., Ferraro P.

Autors Affiliation: CNR – Istituto Nazionale di Ottica Via Campi Flegrei 34, 80078 Napoli and Largo Fermi 6, 50125 Firenze, Italy

Abstract: We demonstrate the optical reconstruction in the visible range (0.532 mu m) of digital holograms recorded at long IR wavelengths (10.6 mu m) by means of a spatial light modulator. By using an integrated recording-reconstruction system, it is, in fact, feasible to achieve direct imaging of holograms acquired outside the visible range, i.e., in the IR spectrum. By choosing a Fourier recording configuration, the reconstructed image, obtained at about a 20 times shorter wavelength than the acquisition image, exhibits minor aberrations, which do not significantly affect the optical reconstruction. The high NA achievable at a long IR wavelength allows us to image large objects at reasonable distances. (C) 2010 Optical Society of America

Journal/Review: OPTICS LETTERS

Volume: 35 (12)      Pages from: 2112  to: 2114

More Information: Funding is provided from the European Community
KeyWords: 3D imaging; Digital holograms; Direct imaging; Fourier; High NA; IR spectrum; IR wavelengths; Large objects; Long infrared; Optical reconstruction; Reconstructed image; Reconstruction systems; Shorter wavelength; Spatial light modulators; Visible range, Holograms; Image recording; Light modulation; Light modulators; Optical recording; Repair, Three dimensional
DOI: 10.1364/OL.35.002112

Citations: 40
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English