M. Morin et al., Inclusion characterization in a scattering slab with time-resolved transmittance measurements: perturbation analysis, APPL OPTICS, 39(16), 2000, pp. 2840-2852
A procedure for the time-domain optical characterization of an inclusion in
a scattering slab is investigated theoretically and experimentally. The me
thod 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 fun
ctions of absorptive and diffusive inclusions are obtained through a pertur
bation solution of the diffusion equation This procedure is used successful
ly 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. (C) 2000 Optical Society of America OCIS codes
: 100.1830, 110.7050, 170.3010, 170.3660, 170.3830, 170.3880, 170.5280, 170
.6920, 170.7050, 290.1990,290.7050.