Publication: Plasmonic Effect on Performance of Random Lasers
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
American Scientific Publishers
Abstract
We investigated the performance of random dye lasers based on metal-fluorophore distance to study the effect of plasmonics through localized surface plasmons. The silver nanoparticles were coated with various silica thicknesses and mixed with Rhodamine 6G in methanol solution to provide gain to the system. The samples were pumped by a Q-Switched Nd:YAG green laser with nanosecond-pulsewidth and the emission light was collected by a spectrometer. The overlapping of extinction spectra of silver nanoparticles/silver-coated silica nanoparticles with the absorption and/or fluorescence of Rhodamine 6G indicates the localized surface plasmon effects. Increasing the metal-fluorophore distance decreases the localized surface plasmon effects result in increase of lasing threshold and decrease of emission peak intensity.
Description
Advanced Science Letters, Volume 24, Number 3, March 2018, pp. 1689-1693(5)
Keywords
Random Lasers, Plasmonics, Technique of Lasers and Photonics