%0 Journal Article
%T Nanostructured Metal Aggregate-Assisted Lasing in Rhodamine 6G Solutions
%A Valery A. Donchenko
%A Yuri E. Geints
%A Vladimir A. Kharenkov
%A Alexey A. Zemlyanov
%J Optics and Photonics Journal
%P 13-17
%@ 2160-889X
%D 2013
%I Scientific Research Publishing
%R 10.4236/opj.2013.38A002
%X <p style=\"text-align:justify;\" class=\"MsoNormal\">
	<span style=\"font-family:Verdana;\" lang=\"EN-US\">We report on the experimental demonstration of considerable lowering of stimulated luminescence (lasing) threshold in R6G laser dye solution doped with metal agglomerates (Ag, Al, Ni) upon second harmonic of Nd:YAG-laser illumination. Due to strong structural coupling between individual nanoparticles</span><span style=\"font-family:Verdana;\" lang=\"EN-US\">,</span><span style=\"font-family:Verdana;\" lang=\"EN-US\"> they may form fractal agglomerates providing an extreme optical pump-field enhancement near their complicated surface. For the first time, we have observed more than twofold increase in lasing efficiency of metal aggregated dye solution as compared to non-agglomerated monomeric metal nanocolloids. No random laser manifestation or surface plasmon-polariton resonances excitations were observed.</span> 
</p>
%K Nano-Composite
%K Luminescence
%K Lasing
%K Metal Agglomerate
%K Surface Plasmon-Polariton Resonance
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=40925