1,4-dialkoxy-2,5-bis[2-(thien-2-yl)ethenyl]benzenes as promising materials for laser optical limiters |
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Authors: | I Fuks-Janczarek Jean Ebothe R Miedziński R Gabański A H Reshak M ?apkowski R Motyka I V Kityk J Suwiński |
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Institution: | (1) Institute of Physics, Długosz University of Czȩstochowa, Al. Armii Krajowej 13/15, Czȩstochowa, Poland;(2) Laboratoire LTME, Universite de Reims, Reims, France;(3) Faculty of Chemistry, Silesian University of Technology, Gliwice, Poland;(4) Institute of Physical Biology, South Bohemia University, Institute of System Biology and Ecology, Academy of Sciences, Nove Hrady, 37333, Czech Republic |
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Abstract: | A new promising organic chromophore for two-photon laser absorption at 1064 nm with 1,4-diethoxy-2,5-bis2-(5-methylthien-2-yl)ethenyl]benzene (A-C) was synthesized. We have performed evaluations of the two-photon absorption for these chromophores incorporated into the polymer matrices. Following the obtained quantum chemical data, we have performed quantum chemical simulations of the third-order susceptibilities for the investigated chrompophore incorporated into the PMMA matrices. The calculations were done within the three-level model. We have established that the experimentally calculated data are a bit less than theoretically calculated; however, the general tendency of their changes shows a good coincidence. The maximally achieved value of the TPA is equal to about 59.2 cm/GW at wavelength 1064 nm, which, together with their high photothermal stabilities, make them good candidates for optical-limiting processes. |
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