New nanoheterostructures based on astralenes: Spectral characteristics and some application aspects |
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| Authors: | M A Belyaeva M V Gryaznova V V Danilov O V Khapova A N Ponomarev G M Ermolaeva T A Shakhverdov |
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| Institution: | (1) Research Institute for Laser Physics, St. Petersburg, 199034, Russia;(2) ZAO Astrin-Kholding, St. Petersburg, 198005, Russia;(3) All-Russia Research Center Vavilov State Optical Institute, St. Petersburg, 199034, Russia |
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| Abstract: | Original compositions in the form of suspensions of astralenes with luminescing solubilizers in various solvents, including liquid crystals (LCs), are developed. Using an LC composition as an example, the possibility of extending the dynamic range of optical limiting due to the joint action of two-photon absorption in the LC matrix and stimulated scattering by carbon nanoparticles is demonstrated. The spectral and luminescent characteristics of such suspensions are determined. The role played by the photochemical factor in the photodynamics of optical limiting in carbon heteronanostructures is discussed. |
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