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Whispering Gallery Mode (WGM) microlasers were obtained by impregnating polystyrene microspheres in an aqueous solution of plasmonic nanoparticles and Rhodamine 6G. The emission spectra of Rhodamine-doped microspheres with diameters of 1 μm and 5-7 μm exhibited peaks corresponding to WGM, with a low Q-factor for 1-μm and a higher Q-factor for 5-7-μm spheres. The embedding of gold nanoparticles into microlasers results in a 40% decrease in the WGM intensity, while doping with silver nanoparticles increases it by 10%.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Evgeniia O. Soloveva, Kamilla Kurassova, Kirill V. Bogdanov, Daler R. Dadadzhanov, Anton A. Starovoytov, Nikita A. Toropov, "Whispering-gallery microlasers doped with plasmonic nanoparticles," Proc. SPIE 12991, Nanophotonics X, 129911X (10 June 2024); https://doi.org/10.1117/12.3022360