A matrix approach for optical detection and imaging through highly scattering media
(Conference Presentation)

Amaury Badon; Dayan Li; Geoffroy Lerosey; Claude Boccara; Mathias Fink; Alexandre Aubry

doi:10.1117/12.2211556

27 April 2016 A matrix approach for optical detection and imaging through highly scattering media (Conference Presentation)

Amaury Badon, Dayan Li, Geoffroy Lerosey, Claude Boccara, Mathias Fink, Alexandre Aubry

Author Affiliations +

Proceedings Volume 9717, Adaptive Optics and Wavefront Control for Biological Systems II; 97170W (2016) https://doi.org/10.1117/12.2211556
Event: SPIE BiOS, 2016, San Francisco, California, United States

Abstract

Our approach first consists in measuring a time-gated reflection matrix associated to a scattering medium using a spatial light modulator at the input and a CCD camera at the output. An interferometric arm allows to discriminate the scattered photons as a function of their time of flight. Inspired by previous works in acoustics, a random matrix approach then allows to get rid of multiple scattering. This improves by far the detection and imaging of targets embedded in or hidden behind a highly scattering medium. As proof of concept, we tackle with the issue of imaging ZnO micrometric beads across a highly scattering paper sheet whose optical thickness is of 12.5 ls, with ls the scattering mean free path. This experimental situation is particularly extreme, even almost desperate for imaging. The ballistic wave has to go through 25 ls back and forth, thus undergoing an attenuation of 10^-11 in intensity. For an incident plane wave, 1 scattered photon over 1000 billions is associated to the target beads. In optical coherence tomography, the single-to-multiple scattering ratio is of 5×10^-4 which prevents from any target detection and imaging. On the contrary, our approach allows to get rid of most of the multiple scattering contribution in this extreme situation. By means of the time-reversal operator, the ballistic echoes associated to each bead are extracted and allow to reconstruct a satisfying image of the targets. The perspective of this work is to apply this promising approach to in-depth imaging of biological tissues.

Conference Presentation

Citation Download Citation

Amaury Badon, Dayan Li, Geoffroy Lerosey, Claude Boccara, Mathias Fink, and Alexandre Aubry "A matrix approach for optical detection and imaging through highly scattering media (Conference Presentation)", Proc. SPIE 9717, Adaptive Optics and Wavefront Control for Biological Systems II, 97170W (27 April 2016); https://doi.org/10.1117/12.2211556

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Scattering

Multiple scattering

Optical imaging

Photons

Scattering media

Target detection

Tissue optics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years