Clear coherent imaging in turbid microfluidics by multiple holographic acquisitions

被引：48

作者：

Bianco, Vittorio ^{[1
]}

Paturzo, Melania ^{[1
]}

Finizio, Andrea ^{[1
]}

Balduzzi, Donatella ^{[2
]}

Puglisi, Roberto ^{[2
]}

Galli, Andrea ^{[2
]}

Ferraro, Pietro ^{[1
]}

机构：

[1] CNR Natl Inst Opt, I-80078 Pozzuoli, NA, Italy

[2] Ist Sperimentale Italiano Lazzaro Spallanzani, I-26027 Rivolta Dadda, Cremona, Italy

来源：

OPTICS LETTERS | 2012年 / 37卷 / 20期

关键词：

DIGITAL HOLOGRAPHY; IMPROVEMENT; MICROSCOPY;

D O I：

10.1364/OL.37.004212

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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

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收藏

页码：4212 / 4214

页数：3

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