Structured adaptive focusing through scattering media

  • Diego Di Battista
  • , Daniele Ancora
  • , Haisu Zhang
  • , Krystalia Lemonaki
  • , Stella Avtzi
  • , Stelios Tzortzakis
  • , Marco Leonetti
  • , Giannis Zacharakis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The combined use of a wavefront modulator and a scattering medium forms an «opaque lens» which forces the light to focus tightly. The adaptive focus has the same shape as the correlation function of the original speckle pattern and it can be generated at defined positions with resolution up to hundreds of nanometers. We have demonstrated that manipulating the speckle pattern spatial components can structure the shape of the focus. Exploiting selectively spatial-frequencies from the speckle components we realized opaque lenses able to produce sub-correlation foci and Bessel beams.

Original languageEnglish
Title of host publicationAdaptive Optics and Wavefront Control for Biological Systems II
EditorsSylvain Gigan, Thomas G. Bifano, Joel Kubby
PublisherSPIE
ISBN (Electronic)9781628419511
DOIs
StatePublished - 2016
Externally publishedYes
EventAdaptive Optics and Wavefront Control for Biological Systems II - San Francisco, United States
Duration: 13 Feb 201615 Feb 2016

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume9717
ISSN (Print)1605-7422

Conference

ConferenceAdaptive Optics and Wavefront Control for Biological Systems II
Country/TerritoryUnited States
CitySan Francisco
Period13/02/1615/02/16

Keywords

  • High-Pass spatial filter
  • Wavefront Shaping
  • bio-medical imaging
  • semi-transparent media.

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