Optimizing light storage in scattering media with the dwell-time operator - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2019

Optimizing light storage in scattering media with the dwell-time operator

Résumé

We prove that optimal control of light energy storage in disordered media can be reached by wavefront shaping. For this purpose, we build an operator for dwell-times from the scattering matrix, and characterize its full eigenvalue distribution both numerically and analytically in the diffusive regime, where the thickness $L$ of the medium is much larger than the mean free path $\ell$. We show that the distribution has a finite support with a maximal dwell-time larger than the most likely value by a factor $(L/\ell)^2\gg 1 $. This reveals that the highest dwell-time eigenstates deposit more energy than the open channels of the medium. Finally, we show that the dwell-time operator can be used to store energy in resonant targets buried in complex media.

Dates et versions

hal-02372132 , version 1 (20-11-2019)

Identifiants

Citer

M. Durand, Sébastien Popoff, R. Carminati, A. Goetschy. Optimizing light storage in scattering media with the dwell-time operator. Physical Review Letters, 2019, ⟨10.1103/PhysRevLett.123.243901⟩. ⟨hal-02372132⟩
72 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More