Spectral and energy luminescence characteristics of R6G dye solutions in ethanol with addition of Ag nanoparticle suspensions in different aggregate states are experimentally investigated. It is demonstrated that incorporation of non-aggregated and aggregated nanoparticles causes the superluminescence thresholds in R6G solutions to decrease. It is established that the optical properties of the laser beam propagation channel are transformed when low-power (20 mW) cw laser radiation passes through the suspension of nanoparticles. This is manifested through the occurrence of a region with enhanced nanoparticle density in the laser beam center, on which diffraction of laser radiation is observed.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 88–94, April, 2011.
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Donchenko, V.A., Zemlyanov, A.A., Panamarev, N.S. et al. Influence of scattering on superluminescence in composites dye solution – nanoparticles. Russ Phys J 54, 493–499 (2011). https://doi.org/10.1007/s11182-011-9644-x
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DOI: https://doi.org/10.1007/s11182-011-9644-x