Photoluminescence of two-dimensional plasmonic structures: enhancement, spectral and lifetime peculiarities below the lasing threshold

We study the interplay between optical properties and photoluminescence spectra of structures based on square lattices of silver nanodiscs or nanoholes in silver embedded in or adjoined to a dye-doped polymer waveguiding layer. The lattices and the waveguiding gain layer were designed to overlap the...

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Bibliographic Details
Published in:Optical materials express 2020-10, Vol.10 (10), p.2643
Main Authors: Yankovskii, Georgiy M., Baklykov, Dmitriy A., Shaimanov, Alexey N., Nechepurenko, Igor A., Dorofeenko, Alexander V., Pischimova, Anastasiya A., Rodionov, Ilya A., Tananaev, Peter N., Baryshev, Alexander V.
Format: Article
Language:English
Subjects:
Fluorescence
Lasing
Lattice parameters
Lattice vibration
Optical lattices
Optical properties
Photoluminescence
Plasmonics
Spectra
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Summary:We study the interplay between optical properties and photoluminescence spectra of structures based on square lattices of silver nanodiscs or nanoholes in silver embedded in or adjoined to a dye-doped polymer waveguiding layer. The lattices and the waveguiding gain layer were designed to overlap the spectral features of such two-dimensional (2D) plasmonic structures. By varying the lattice constant, we demonstrate a condition for a significant increase of photoluminescence intensity and compare lifetime reduction for both nanodiscs- and nanoholes-based structures, when pumping them below lasing threshold. These enhancements are reached by matching the dark modes of the structure with the gain medium fluorescence spectrum.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.401295