Clear coherent imaging in turbid microfluidics by multiple holographic acquisitions
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 lDOI: 10.1364/OL.37.004212Citations: 38data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-11-10References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here