When light propagates through complex media, such as biological tissue, paint, clouds or even multimode fibers, it is mixed into a high number of degrees of freedom leading to the formation of a speckle pattern at the output.
While the process leading to the generation of this intricate interference pattern is complex, the response of the system between a set of input and output modes is fully represented by a scattering matrix due to the deterministic and linear nature of the propagation of light in such media. Once measured using wavefront shaping techniques, this matrix gives us full control over the wave propagation, and can be used to image through highly scattering biological tissue, or transmit information through multimode fibers.
However, we are now interested in tackling situation in which a scattering matrix cannot be defined. This happens, for instance, for dynamic or nonlinear media.
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- R. Gutiérrez-Cuevas, S. M. Popoff, Façonnage du front d’onde pour l’étude des milieux complexes, Photoniques 135 46-50 (2025). PDF • DOI
- R. Gutiérrez-Cuevas, D. Bouchet, J. de Rosny, S. M. Popoff, Reaching the precision limit with tensor-based wavefront shaping, Nat. Commun. 15 6319 (2024). PDF • DOI
- R. Gutiérrez-Cuevas, A. Goetschy, G. Pelc, E. Ravn Andresen, L. Bigot, Y. Quiquempois, M. Bsaibes, P. Sillard, M. Bigot, J. de Rosny, S. M. Popoff, Characterization and exploitation of the rotational memory effect in multimode fibers, Phys. Rev. X 14 031046 (2024). PDF • DOI
- S. M. Popoff, Y. Bromberg, M. W. Matthès, R. Gutiérrez-Cuevas, A practical guide to Digital Micro-mirror Devices (DMDs) for wavefront shaping, J. Phys. Photonics 6 043001 (2024).
- R. Gutiérrez-Cuevas, S. M. Popoff, Binary holograms for shaping light with digital micromirror devices, J. Phys. Photonics 6 045022 (2024). PDF • DOI
- R. Shekel, O. Lib, R. Gutiérrez-Cuevas, S. M. Popoff, A. Ling, Y. Bromberg, Shaping single photons through multimode optical fibers using mechanical perturbations, APL Photonics 8 096109 (2023). PDF • DOI