16 May 2017 Photo-induced nonlinear absorption in carbon nanostructures
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Abstract
Photoinduced nonlinear absorption of new carbon nanoparticles – astralenes and two types of carbon nanoclusters was investigated. The nonlinear absorption of aqueous suspensions of astralenes and solutions of carbon nanoclusters was studied by the method of z-scanning with Nd3+ -glass laser (wavelength λ = 1064 nm) in Q-switching regimes. A numerical model of the propagation of the laser pulse in a medium with reverse saturable absorption was created. Relaxation time of the first exited state and the ratio of absorption cross-sections of the first exited and ground states for the researched types of carbon nanoparticles were determined by the numerical simulation.
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Rimma Sh. Zatrudina, Rimma Sh. Zatrudina, Vladislav Yu. Gribkov, Vladislav Yu. Gribkov, } "Photo-induced nonlinear absorption in carbon nanostructures", Proc. SPIE 10228, Nonlinear Optics and Applications X, 1022815 (16 May 2017); doi: 10.1117/12.2265353; https://doi.org/10.1117/12.2265353
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