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Proceedings Paper

Enhancing or inhibiting spontaneous emission from fluorescent molecules in the near-field of silicon nanoantennas (Conference Presentation)
Author(s): Dorian Bouchet; Mathieu Mivelle; Julien Proust; Bruno Gallas; Igor Ozerov; Maria F. Garcia-Parajo ; Yannick De Wilde; Nicolas Bonod; Valentina Krachmalnicoff; Sebastien Bidault

Paper Abstract

Broadband subwavelength optical resonators have the ability to enhance the spontaneous emission rate and brightness of solid-state emitters. Recently, high-index dielectrics have been proposed as an alternative to plasmonic materials to design optical resonators with low ohmic losses. In this study, the interaction between a silicon nanoantenna and solid-state emitters is characterized by tuning the position of a 100 nm diameter fluorescent sphere in the vicinity of an e-beam fabricated silicon disk using scanning-probe microscopy. If the nanodisk resonance matches the emission wavelength of the fluorescent molecules, we observe enhanced decay rates at short distances; while, for an out-of-resonance antenna, the fluorescence lifetime is locally increased. Furthermore, our experiments highlight the ability of silicon antennas to increase far-field collection efficiencies, in agreement with numerical simulations (D. Bouchet et al, Phys. Rev. Applied 6, 064016 (2016)). The intensity of spontaneous emission from fluorescent dye molecules can be further enhanced, by more than two orders of magnitude, in the nanoscale gap between silicon nanodisks. This is evidenced at the single molecule level using fluorescence correlation spectroscopy with freely diffusing emitters (R. Regmi et al, Nano Lett. 16, 5143 (2016)). These results demonstrate the potential of silicon antennas for the manipulation of solid-state emitters at the nanoscale and at room temperature.

Paper Details

Date Published: 14 March 2018
Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105401A (14 March 2018); doi: 10.1117/12.2286620
Show Author Affiliations
Dorian Bouchet, Institut Langevin (France)
Mathieu Mivelle, Institut Langevin (France)
Univ. Pierre et Marie Curie (France)
Ctr. National de la Recherche Scientifique (France)
Julien Proust, Aix-Marseille Univ. (France)
Institut Fresnel (France)
Bruno Gallas, Univ. Pierre et Marie Curie (France)
Institut des NanoSciences de Paris (France)
Igor Ozerov, Aix-Marseille Univ, (France)
CINaM - Ctr. Interdisciplinaire de Nanoscience de Marseille (France)
Maria F. Garcia-Parajo , ICFO - Institut de Ciències Fotòniques (Spain)
The Barcelona Institute of Science and Technology (Spain)
Yannick De Wilde, Institut Langevin (France)
Nicolas Bonod, Aix-Marseille Univ. (France)
Ctr. National de la Recherche Scientifique (France)
Institut Fresnel (France)
Valentina Krachmalnicoff, Institut Langevin (France)
Sebastien Bidault, Institut Langevin (France)

Published in SPIE Proceedings Vol. 10540:
Quantum Sensing and Nano Electronics and Photonics XV
Manijeh Razeghi; Gail J. Brown; Jay S. Lewis; Giuseppe Leo, Editor(s)

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