Enhanced two-photon photoluminescence assisted by multi-resonant characteristics of a gold nanocylinder

Nanophotonics

article

Artur Movsesyan¹  Pierre-Michel Adam¹  Gwénaëlle Lamri¹  Sergei Kostcheev¹  Anke Horneber⁴  Annika Bräuer⁵  Alfred J. Meixner⁴  Monika Fleischer⁵  Dai Zhang⁴  Anne-Laure Baudrion¹ 

[1] Laboratory Light, University of Technology of Troyes & CNRS ERL 7004;Institut Interdisciplinaire d’Innovation Technologique (3IT), Université de Sherbrooke;Laboratoire Nanotechnologies Nanosystèmes (LN2) – CNRS UMI-3463 – 3IT;Institute of Physical and Theoretical Chemistry and Center LISA+, Eberhard Karls University Tübingen;Institute for Applied Physics and Center LISA+, Eberhard Karls University Tübingen

关键词: LSPR;    metallic nanostructures;    photoluminescence;    TPPL;   

DOI  :  10.1515/nanoph-2020-0213

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

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.

【 授权许可】

CC BY