title: Picosecond time scale modification of forward scattered light induced by absorption inside particles.
abstract: The aim of this work is to evaluate the influence of absorption processes on the Time Of Flight (TOF) of the light scattered out of a thick medium in the forward direction. We use a Monte-Carlo simulation with temporal phase function and Debye modes. The main result of our study is that absorption inside the particle induces a decrease of the TOF on a picosecond time scale, measurable with a femtosecond laser apparatus. This decrease, which exhibits a neat sensitivity to the absorption coefficient of particles, could provide an efficient way to measure this absorption.
authors.affiliation: Departement of theorical and applied optics, ONERA, 31055 Toulouse cedex, France.
authors.forename: Myriam
authors.initials: M
authors.lastname: Kervella
authors.forename: Françoix-Xavier
authors.initials: FX
authors.lastname: d'Abzac
authors.forename: François
authors.initials: F
authors.lastname: Hache
authors.forename: Laurent
authors.initials: L
authors.lastname: Hespel
authors.forename: Thibault
authors.initials: T
authors.lastname: Dartigalongue
mesh_terms: D000042:Absorption; D003198:Computer Simulation; D008027:Light; D008962:Models, Theoretical; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*