Scientific Results

Digital holography in combination with diffraction grating to get super-resolution

Year: 2008

Authors: Paturzo M., Merola F., Grilli S., De Nicola S., Ferraro P.

Autors Affiliation: CNR – Istituto Nazionale di Ottica Applicata via Campi Flegrei 34, 80078 Pozzuoli (NA),Italy; Istituto di Cibernetica del CNR via Campi Flegrei 34, 80078-Pozzuoli (NA), Italy

Abstract: Resolution is an important issue in inspection of objects on microscopic scale. Various approaches have been investigated to increase the optical resolution behind the diffraction limit of an optical imaging system. Demonstration that super-resolution is possible have been also established in interference microscopy. We have studied the possibility to use diffraction gratings, in different experimental configurations for increasing the aperture of an optical imaging system. The aim of the study is to demonstrate that super-resolution is possible and is a practical and viable method for a coherent optical microscope. We take benefit of the numerical reconstruction properties of DH in combination with diffraction grating to get super-resolution. Various attempts have been performed and results are presented and discussed. The approaches could be used for metrology and imaging application in various fields of engineering and biology.

Journal/Review: PROCEEDINGS OF SPIE

Volume: 6995      Pages from: 699505  to: 699505

KeyWords: superresolution; lithium niobate; diffraction gratings
DOI: 10.1117/12.782111

Citations: 1
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English