Observation of resonant behavior in the energy velocity of diffused light.
In this Letter we demonstrate Mie resonances mediated transport of light in randomly arranged, monodisperse dielectric spheres packed at high filling fractions. By means of both static and dynamic optical experiments we show resonant behavior in the key transport parameters and, in particular, we find that the energy transport velocity, which is lower than the group velocity, also displays a resonant behavior.
Sapienza
R
R
Instituto de Ciencia de Materiales de Madrid , Cantoblanco 28049 Madrid España. sapienza@icmm.csic.es
García
P D
PD
Bertolotti
J
J
Martín
M D
MD
Blanco
A
A
Viña
L
L
López
C
C
Wiersma
D S
DS