18 December 2000 Modeling of light propagation in turbid media by means of microwaves
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A molecular engineering strategy, based on the role of the charge transfer conjugated system, and of donor substituents on theoretical linear and two-photon absorption (TPA), is developed. The best trade-off TPA-linear absorption is fulfilled by two tetraphenyl-diamine derivatives (biphenyl and fluorene), which could allow, if mixed, to cover efficiently the visible range. Furthermore, the theoretical study of two-photon absorption (TPA) properties of polyphenyls (with the number of benzene monomer units n = 1 to 6) is related to cooperative effects between monomers. These effects lead to an increase of the TPA cross-section with n without satuaration according to a power law.
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Nicolay N. Korotaev, Nicolay N. Korotaev, Igor L. Volkhin, Igor L. Volkhin, } "Modeling of light propagation in turbid media by means of microwaves", Proc. SPIE 4111, Terahertz and Gigahertz Electronics and Photonics II, (18 December 2000); doi: 10.1117/12.422160; https://doi.org/10.1117/12.422160


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