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Enhanced two-photon photoluminescence assisted by multi-resonant characteristics of a gold nanocylinder
- Source :
- Nanophotonics, Vol 9, Iss 12, Pp 4009-4019 (2020)
- Publication Year :
- 2020
- Publisher :
- De Gruyter, 2020.
-
Abstract
- Multi-resonant plasmonic simple geometries like nanocylinders and nanorods are highly interesting for two-photon photoluminescence and second harmonic generation applications, due to their easy fabrication and reproducibility in comparison with complex multi-resonant systems like dimers or nanoclusters. We demonstrate experimentally that by using a simple gold nanocylinder we can achieve a double resonantly enhanced two-photon photoluminescence of quantum dots, by matching the excitation wavelength of the quantum dots with a dipolar plasmon mode, while the emission is coupled with a radiative quadrupolar mode. We establish a method to separate experimentally the enhancement factor at the excitation and at the emission wavelengths for this double resonant system. The sensitivity of the spectral positions of the dipolar and quadrupolar plasmon resonances to the ellipticity of the nanocylinders and its impact on the two-photon photoluminescence enhancement are discussed.
- Subjects :
- lspr
metallic nanostructures
photoluminescence
tppl
Physics
QC1-999
Subjects
Details
- Language :
- English
- ISSN :
- 21928606 and 21928614
- Volume :
- 9
- Issue :
- 12
- Database :
- Directory of Open Access Journals
- Journal :
- Nanophotonics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.95db330729274806b43bfd522e66cd29
- Document Type :
- article
- Full Text :
- https://doi.org/10.1515/nanoph-2020-0213