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. © 2011 OSA
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Myriam Kervella, François-Xavier d'Abzac, François Hache, Laurent Hespel, Thibault Dartigalongue. Picosecond time scale modification of forward scattered light induced by absorption inside particles. Optics Letters, Optical Society of America, 2011, 20 (1), pp.32-41. ⟨10.1364/OE.20.000032⟩. ⟨hal-00094273⟩

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