Clear coherent imaging in turbid microfluidics by multiple holographic acquisitions

Anno: 2012

Autori: Bianco V., Paturzo M., Finizio A., Balduzzi D., Puglisi R., Galli A., Ferraro P.

Affiliazione autori: CNR—National Institute of Optics, Via Campi Flegrei, 34, Pozzuoli (NA) I-80078, Italy;
Istituto Sperimentale Italiano “Lazzaro Spallanzani,” Località La Quercia, Rivolta d’Adda, Cremona 26027, Italy

Abstract: Recently it has been demonstrated that digital holography is a powerful means allowing imaging of both amplitude and phase objects in turbid flowing media. However, in quasi-static turbid microfluidics, multiple scattering contributions through the colloids superimpose coherently to the recording device, resulting in speckle noise and hindering a clear vision of the objects. In this Letter we exploit the Brownian motion of the colloidal particles to get multiple uncorrelated holograms, and we combine them to reduce the speckle contrast. In this way we get a multi-look gain without losing image resolution. (C) 2012 Optical Society of America

Giornale/Rivista: OPTICS LETTERS

Volume: 37 (20)      Da Pagina: 4212  A: 4214

Maggiori informazioni: This work is supported by the project SESsaggio Seme Italiano BOVino (SESSIBOV) 9106/7303/2009 of the Ministero delle Politiche Agricole e Forestali and by the Progetto Operativo Nazionale (PON) project MONitoraggio Innovativo per le Coste e l’Ambiente Marino (MONICA) funded by Italian Ministry of Education, University and Research (MIUR).
Parole chiavi: Digital Holography; Improvement; Microscopy
DOI: 10.1364/OL.37.004212

Citazioni: 48
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-04
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