Clear coherent imaging in turbid microfluidics by multiple holographic acquisitions

Year: 2012

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

Autors Affiliation: 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

Journal/Review: OPTICS LETTERS

Volume: 37 (20)      Pages from: 4212  to: 4214

More Information: 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
DOI: 10.1364/OL.37.004212

Citations: 43
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