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Proceedings Paper

DMD-based scattering assisted imaging with unknown speckle patterns (Conference Presentation)
Author(s): Marco Leonetti; Alfonso Grimaldi; Silvia Ghirga; Giancarlo Ruocco; Giuseppe Antonacci

Paper Abstract

Standard imaging systems provide a spatial resolution that is ultimately dictated by the numerical aperture (NA) of the illumination and collection optics. In biological tissues, the resolution is strongly affected by scattering, which limits the penetration depth to a few tenths of microns. Here we exploit the properties of speckle patterns embedded into a strongly scattering matrix to illuminate the sample at high spatial frequency content. Combining illumination performed through a Digital Micromirror Device(DMD) and a custom deconvolution algorithm, we obtain an increase in the transverse spatial resolution by a factor of 2.5 with respect to the natural diffraction limit.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11294, Emerging Digital Micromirror Device Based Systems and Applications XII, 1129404 (10 March 2020); doi: 10.1117/12.2537322
Show Author Affiliations
Marco Leonetti, Istituto Italiano di Tecnologia (Italy)
Alfonso Grimaldi, Istituto Italiano di Tecnologia (Italy)
Silvia Ghirga, Istituto Italiano di Tecnologia (Italy)
Giancarlo Ruocco, Istituto Italiano di Tecnologia (Italy)
Giuseppe Antonacci, Istituto Italiano di Tecnologia (Italy)

Published in SPIE Proceedings Vol. 11294:
Emerging Digital Micromirror Device Based Systems and Applications XII
John Ehmke; Benjamin L. Lee, Editor(s)

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