title: Inclusion characterization in a scattering slab with time-resolved transmittance measurements: perturbation analysis.
abstract: A procedure for the time-domain optical characterization of an inclusion in a scattering slab is investigated theoretically and experimentally. The method relies on the measurement of a contrast function, which is defined as the time-dependent relative change in the transmitted signal resulting from the presence of the inclusion. Analytical expressions for the contrast functions of absorptive and diffusive inclusions are obtained through a perturbation solution of the diffusion equation. This procedure is used successfully to determine the optical properties of absorptive, diffusive, and mixed inclusions located at midplane in a scattering slab by use of time-resolved transmittance measurements.
authors.affiliation: InstitutNational d'Optique, Sainte-Foy, G1P 4S4 Québec, Canada. michel.morin@ino.qc.c
authors.forename: M
authors.initials: M
authors.lastname: Morin
authors.forename: S
authors.initials: S
authors.lastname: Verreault
authors.forename: A
authors.initials: A
authors.lastname: Mailloux
authors.forename: J
authors.initials: J
authors.lastname: Fréchette
authors.forename: S
authors.initials: S
authors.lastname: Chatigny
authors.forename: Y
authors.initials: Y
authors.lastname: Painchaud
authors.forename: P
authors.initials: P
authors.lastname: Beaudry