Open AccessSelf-propelling bacteria mimic coherent light decorrelation
Author(s) -
Vittorio Bianco,
Valentina Marchesano,
Andrea Fińizio,
Melania Paturzo,
Pietro Ferraro
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.009388
Subject(s) - decorrelation , speckle pattern , optics , physics , suspension (topology) , microscope , speckle noise , computer science , computer vision , mathematics , homotopy , pure mathematics
We show here that live e-coli bacterial culture, thanks to the self-propelling feature, can significantly reduce the coherent noise. In fact, the typical self-propelled drive of such microorganisms provides enough time diversity in speckle patterns. Optical properties of a bacteria suspension have been investigated and analyzed thus showing that it behaves as a quite good optical speckle decorrelation device. Samples with different bacteria densities have been studied. The decorrelation effect has been demonstrated by probing the imaging performance in through transmission in coherent microscope configuration.