Rb otical resonance inside a random porous medium

Santiago Villalba (1) , Horacio Failache (1) , Athanasios Laliotis (2) , Lorenzo Lenci (1) , Sergio Barreiro (1) , Arturo Lezama (1)

1 Instituto de Fisica, Facultad de Ingenieria,
2 LPL - Laboratoire de Physique des Lasers

We studied resonant laser interaction with Rb atoms confined to the interstitial cavities of a random porous glass. Due to diffusive light propagation, the effect of atomic absorption on the light scattered by the sample is almost entirely compensated by atomic fluorescence at low atomic densities. For higher densities, radiation trapping increases the probability of non-radiative decay via atom-wall collisions. A simple connection of the fluorescence/absorption yield to the sample porosity is given.

Domaines: Physique Atomique [physics.atom-ph]

Santiago Villalba, Horacio Failache, Athanasios Laliotis, Lorenzo Lenci, Sergio Barreiro, et al.. Rb otical resonance inside a random porous medium. Optics Letters, 2013, 38 (2), pp.193-195. ⟨hal-00793852⟩