Broadband spontaneous emission rate enhancement through the design of plasmonic nanoantennas

Vallée, Renaud A. L.; Mélanie, F; Saadaoui, H.; Ravaine, Serge

doi:10.1364/ome.2.000566

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…14,15 Quantum emitters located in the vicinity of such 2D metallic PCs will experience the Purcell effect. [16][17][18] Their emission can also be spectrally reshaped 19 or spatially redirected. 20,21 Such plasmophotonic systems can also be used in bio-sensing, 22,23 photovoltaic and photo-catalytic devices.…”

Section: Introductionmentioning

confidence: 99%

Emitters as probes of a complex plasmo-photonic mode

et al. 2014

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Section: Introductionmentioning

confidence: 99%

Emitters as probes of a complex plasmo-photonic mode

et al. 2014

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“…In particular, the systematic application of EM field enhancement in SEF 2 is nowadays investigated in plasmonic metal nanostructures, with applications in sensing at the nanomolar level useful in bio-chemistry, medicine, pharmaceutics, homeland security, nanoscale light filtering and waveguiding useful in information technology, solar cells, LEDs and OLEDs for energy efficieny [3][4][5][6] . SEF was previously demonstrated on a diverse range of metal nanostructures: colloidal nanoparticles 7 , island films 8 , periodic structures made by conventional lithography 9 , periodic films obtained by colloidal self-assembly 10 . This is the author's peer reviewed, accepted manuscript.…”

Section: Introductionmentioning

confidence: 99%

Surface-enhanced fluorescence imaging on linear arrays of plasmonic half-shells

Farcău

Craciun

Vallée

2020

The Journal of Chemical Physics

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Here, we perform a Surface-Enhanced Fluorescence (SEF) intensity and lifetime imaging study on linear arrays of silver half-shells (LASHS), a class of polarization-sensitive hybrid colloidal photonic-plasmonic crystal unexplored previously in SEF. By combining FLIM, scanning confocal fluorescence imaging, Rayleigh scattering imaging, optical microscopy, and FDTD simulations, we identify with high accuracy the spatial locations where SEF effects (intensity increase and lifetime decrease) take place. These locations are the junctions/crevices between adjacent half-shells in the LASHS, locations of high electromagnetic field enhancement, and strong emitter-plasmon interactions, as confirmed also by simulated field maps. Such detailed knowledge of the distributed SEF enhancements and lifetime modifications distribution, with respect to topography, should prove useful for improved future evaluations of SEF enhancement factors and a more rational design of efficiency-optimized SEF substrates. These linear arrays of metal-coated microspheres expand the family of hybrid colloidal photonic-plasmonic crystals, platforms with potential for

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Far-field disentanglement of modes in hybrid plasmonic-photonic crystals by fluorescence nano-reporters

et al. 2013

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Abstract:In this paper, the resonance modes exhibited by a hybrid nanostructure have been disentangled in the far-field owing to narrow-band fluorescence nano-reporters. Hybrid plasmonic-photonic crystals were fabricated using large (457 nm) monodisperse polystyrene spheres self-assembled into 2D photonic crystals and subsequently coated by a 30 nm thick silver layer. Such structures exhibit a complex resonance pattern, which has been elucidated owing to numerical simulations and electric near-field patterns obtained with a scattering type scanning near-field optical microscope (s-SNOM). For the sake of disentangling the resonance modes of the hybrid structure in the far-field, different types of semiconductor quantum dots (QDs), acting as nanoreporters of the local interactions, were dispersed on top of distinct structures. Depending on the relative overlap of the emission spectrum of a particular type of QDs with the resonance features of the hybrid structure, we affect their emission rate in a unique way, as a consequence of the complex interaction occurring between the plasmo-photonic modes and the excitons. Such plasmonic structures appear to be particularly relevant for fluorescence-based sensing devices.

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Broadband spontaneous emission rate enhancement through the design of plasmonic nanoantennas

Cited by 3 publications

References 37 publications

Emitters as probes of a complex plasmo-photonic mode

Emitters as probes of a complex plasmo-photonic mode

Surface-enhanced fluorescence imaging on linear arrays of plasmonic half-shells

Far-field disentanglement of modes in hybrid plasmonic-photonic crystals by fluorescence nano-reporters

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