Metal enhanced fluorescence in rare earth doped plasmonic core–shell nanoparticles

Derom, S.; Berthelot, Alice; Pillonnet, Anne; Benamara, O.; Jurdyc, Anne-Marie; Girard, C.; Francs, Gérard Colas des

doi:10.1088/0957-4484/24/49/495704

Cited by 66 publications

(46 citation statements)

References 48 publications

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“…Indeed, in principle a very long lifetime (essentially forbidden) transition could be activated. Although certain analogies might be drawn with the enhancement of optical emission through its coupling with plasmonic surfaces, [11][12][13][14][15][16][17][18][19][20] the present development modifies spontaneous emission through direct interaction with the oscillating electric field of throughput radiation, without the need of any surface. Related to the control of emission is the coupling of stimulated emission with coherent scattering, which may lead to optical transistor action, and the population of dark states by the control of light absorption.…”

Section: Introductionmentioning

confidence: 90%

Advanced electrodynamic mechanisms for the nanoscale control of light by light

Andrews

Leeder

2015

SPIE Proceedings

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A wide range of mechanisms is available for achieving rapid optical responsivity in material components. Amongst them, some of the most promising for potential device applications are those associated with an ultrafast response and a short cycle time. These twin criteria for photoresponsive action substantially favor optical, over most other, forms of response such as those fundamentally associated with photothermal, photochemical or optomechanical processes. The engagement of nonlinear mechanisms to actively control the characteristics of optical materials is not new. Indeed, it has been known for over fifty years that polarization effects of this nature occur in the optical Kerr effect -although in fluid media the involvement of a molecular reorientation mechanism leads to a significant response time. It has more recently emerged that there are other, less familiar forms of optical nonlinearity that can provide a means for one beam of light to instantly influence another. In particular, major material properties such as absorptivity or emissivity can be subjected to instant and highly localized control by the transmission of light with an off-resonant wavelength. This presentation introduces and compares the key electrodynamic mechanisms, discussing the features that suggest the most attractive possibilities for exploitation. The most significant of such mechanistic features include the off-resonant activation of optical emission, the control of excited-state lifetimes, the access of dark states, the inhibition or re-direction of exciton migration, and a coupling of stimulated emission with coherent scattering. It is shown that these offer a variety of new possibilities for ultrafast optical switching and transistor action, ultimately providing all-optical control with nanoscale precision.

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Section: Introductionmentioning

confidence: 90%

Advanced electrodynamic mechanisms for the nanoscale control of light by light

Andrews

Leeder

2015

SPIE Proceedings

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“…Following SERS, metal enhanced fluorescence (MEF) leads to enhancement factor of the order of tens [45,46,47,48,49,50] with possible applications to nanotheranostics [51,52]. The fluorescence increase results from excitation field enhancement and emission rate modification (Purcell effect).…”

Section: Surface Enhanced Spectroscopiesmentioning

confidence: 99%

Plasmonic Purcell factor and coupling efficiency to surface plasmons. Implications for addressing and controlling optical nanosources

Francs

Barthès

Bouhélier

et al. 2016

J. Opt.

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Abstract. The Purcell factor Fp is a key quantity in cavity quantum electrodynamics (cQED) that quantifies the coupling rate between a dipolar emitter and a cavity mode. Its simple form Fp ∝ Q/V unravels the possible strategies to enhance and control light-matter interaction. Practically, efficient light-matter interaction is achieved thanks to either i) high quality factor Q at the basis of cQED or ii) low modal volume V at the basis of nanophotonics and plasmonics. In the last decade, strong efforts have been done to derive a plasmonic Purcell factor in order to transpose cQED concepts to the nanocale, in a scale-law approach. In this work, we discuss the plasmonic Purcell factor for both delocalized (SPP) and localized (LSP) surface-plasmon-polaritons and briefly summarize the expected applications for nanophotonics. On the basis of the SPP resonance shape (Lorentzian or Fano profile), we derive closed form expression for the coupling rate to delocalized plasmons. The quality factor factor and modal confinement of both SPP and LSP are quantified, demonstrating their strongly subwavelength behaviour.

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“…This is caused by modification of crystal defects by the SiO 2 layer, so the decrease of the non-radiative decay rates leads to the increasing of lifetimes. The effect of the Ag NPs on the luminescence property can be understood by employing the theory of Weitz and Nitzan [39,40]. Following their analysis, one can present the fluorescence intensity ratio factor (F RF ) as follow:…”

Section: Photoluminescence Emissionmentioning

confidence: 99%

Influence of SiO2 layer on the plasmon quenched upconversion luminescence emission of core-shell NaYF4:Yb,Er@SiO2@Ag nanocomposites

Wang

Gao

Wang

et al. 2016

Materials Research Bulletin

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β-NaYF 4 :Yb,Er@SiO 2 @Ag core-shell hybrid nanostructures are prepared and single core-shell hybrid particle is taken to investigate the influence of separation layer on the metal enhanced upconversion luminescence and corresponding mechanism. It is found that the green ( 4 S 3/2 → 4 I 15/2 ) and red ( 4 F 9/2 → 4 I 15/2 ) emissions of Er 3+ increase first and then decrease with the increase of silica shell thickness. The best enhancement is observed at the silica thickness of 12 nm. Time-resolved spectra study shows that the emission enhancement dominates when the silica thickness is 12 nm, which leads to an enhancement factor of 1.28. But the enhancement factor reduces to 0.52 when the silica shell thickness is 5 nm. Here, we define enhancement factor g(ω F ) as 0 F / ) ( I I g F   , I F and I 0 are fluorescence intensities of UCNPs with emission enhancement and without plasmon enhancement. The luminescence enhancement is owing to the enhanced emission process rather than the excitation process.

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Metal enhanced fluorescence in rare earth doped plasmonic core–shell nanoparticles

Cited by 66 publications

References 48 publications

Advanced electrodynamic mechanisms for the nanoscale control of light by light

Advanced electrodynamic mechanisms for the nanoscale control of light by light

Plasmonic Purcell factor and coupling efficiency to surface plasmons. Implications for addressing and controlling optical nanosources

Influence of SiO2 layer on the plasmon quenched upconversion luminescence emission of core-shell NaYF4:Yb,Er@SiO2@Ag nanocomposites

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