Created by sebastien.popoff on 01/07/2014


From diffusive to ballistic-like transport in absorbing media

[S.F. Liew et al., Phys. Rev. B, 89, (2013)]

Intuitively, absorption of light is detrimental for imaging as it reduces the intensity of the image we see. On the other hand, scattering is also a known obstacle for imaging as it mixes light sending it in all the directions. In the present paper, S.F. Liew and his collaborators from Yale University (CT, USA) and the University of Twente (The Netherlands) show that, contrary to appearances, absorption can in fact help light to follow a direct path through disordered media.

See full post
Created by sebastien.popoff on 23/06/2014

Talks Wavefront shaping

Maximally efficient imaging through multimode fiber

 Joel A. Carpenter

CLEO 2014, San Jose, CA, USA
Thursday, 12 June, 2014

Polarization diverse images are generated at the end of a multimode fiber using spatial light modulators to completely characterize propagation through the fiber in terms of the eigenmodes.

See full post
Created by sebastien.popoff on 13/05/2014

Talks Wavefront shaping

Photoacoustic Imaging with Coherent Light

Emmanuel Bossy

Workshop: Inverse Problems and Imaging, Paris
12 February 2013

Hosted by Yves Capdeboscq

See full post

Created by sebastien.popoff on 18/11/2013

Talks Wavefront shaping

Coherent control of the total transmission of light through disordered media

Sébastien Popoff

FiO, Orlando, FL, USA,
October 2013

We demonstrate order of magnitude coherent control of total transmission of light through random media by shaping the wave front of the input light. To understand how the finite illumination area on a wide slab affects the maximum values of total transmission, we develop a model based on random matrix theory that reveals the role of long-range correlations. Its predictions are confirmed by numerical simulations and provide physical insight into the experimental results.
Presentation of the article [S.M. Popoff et al., Phys. Rev. Lett. 104, (2014)]

See full post