Two-Color Single Hybrid Plasmonic Nanoemitters with Real Time Switchable Dominant Emission Wavelength

Zhou, Xuan; Wenger, J.; Viscomi, Francesco N.; Cunff, L. Le; Béal, Jérémie; Kochtcheev, Serguei; Yang, Xuyong; Wiederrecht, Gary P.; Francs, Gérard Colas des; Bisht, Anu Singh; Jradi, Safi; Caputo, Roberto; Demir, Hilmi Volkan; Schaller, Richard D.; Plain, Jérôme; Vial, Alexandre; Sun, Xiao Wei; Bachelot, Renaud

doi:10.1021/acs.nanolett.5b02962

Cited by 38 publications

(42 citation statements)

References 57 publications

(87 reference statements)

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“…Metallic nanostructures offer the possibility to strongly confine light at nanometer scale. [1][2][3][4][5] In general, rational control of the plasmonic nanostructures' geometry and/or incident beam shaping (including phase, polarization state and angle of incidence) can produce a large variety of near-field distributions that can be exploited in photonic computing, 6,7 nanophotochemistry, [8][9][10][11] optical trapping, [12][13][14][15] non-linear nanoptics, [16][17][18] Surface Enhanced Raman Spectroscopy, [19][20][21] plasmon-assisted light emission (including single photon emission), [22][23][24][25][26][27][28] and hot carrier generation and collection. [29][30][31] In this context, plasmonic oligomers are very interesting to efficiently confine and enhance light intensity at deep subwavelength scale within the gaps separating the different plasmonic particles.…”

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confidence: 99%

Nanoscale Switching of Near-Infrared Hot Spots in Plasmonic Oligomers Probed by Two-Photon Absorption in Photopolymers

et al. 2017

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Plasmonic oligomers are near-field coupled assemblies of metallic nanoparticles. Both their scattering/absorption spectra and the spatial distribution of the electromagnetic field can be tailored through the hybridization of plasmonic modes hosted by individual particles. Such a control on the field distribution opens new routes to deliver light at a deep subwavelength scale in targeted locations ("hot spots"). However, active control of hot spots in plasmonic oligomers and their observation in the near field are highly challenging. Here, we propose to use a two-photon absorption process in azopolymer in the near infrared to imprint from the far field the near field distribution around a trimer antenna. The trimer antenna comprises two nanogaps separated by a quarter of the wavelength in the polymer and is designed to allow for the switch on a single nanogap when illuminated at 900 nm by a 2 collimated beam at an oblique incidence. The monitoring of the topographical depletions in the photopolymer proves that it is possible to address a single hot spot in the structure and to remotely switch its location in the two nanogaps on demand, simply by illuminating with an opposite oblique incidence. This work shows that bonding and anti-bonding gap modes can be selectively excited resulting in controlled hot spot locations. Two-photon absorption by azobenzene-containing photopolymer turns out to be a reliable approach for investigating confined plasmonic fields in the near infrared with a 20 nm resolution.

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confidence: 99%

Nanoscale Switching of Near-Infrared Hot Spots in Plasmonic Oligomers Probed by Two-Photon Absorption in Photopolymers

et al. 2017

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“…The negative liquid photoresist is a mixture made from Pentaerythritol triacrylate (PETA) which has been widely used as polymerizable monomer to fabricate micro-optical elements 39 40 41 42 , and 2.4% of Irgacure 819 (Irg 819) as photoinitiator 43 .…”

Section: Resultsmentioning

confidence: 99%

Wavelength-scale light concentrator made by direct 3D laser writing of polymer metamaterials

Moughames

Jradi

Chan

et al. 2016

Sci Rep

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We report on the realization of functional infrared light concentrators based on a thick layer of air-polymer metamaterial with controlled pore size gradients. The design features an optimum gradient index profile leading to light focusing in the Fresnel zone of the structures for two selected operating wavelength domains near 5.6 and 10.4 μm. The metamaterial which consists in a thick polymer containing air holes with diameters ranging from λ/20 to λ/8 is made using a 3D lithography technique based on the two-photon polymerization of a homemade photopolymer. Infrared imaging of the structures reveals a tight focusing for both structures with a maximum local intensity increase by a factor of 2.5 for a concentrator volume of 1.5 λ3, slightly limited by the residual absorption of the selected polymer. Such porous and flat metamaterial structures offer interesting perspectives to increase infrared detector performance at the pixel level for imaging or sensing applications.

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“…This plasmonic hybridization is known to be reversible and can be enhanced by application of better resonators. As a perspective future application, this polarization-dependent strong coupling could be a prime interest for nanorods coupled to different emitters such as those in [ 17 ]. Indeed, in the anti-crossing region, the strong local field produced by the plasmonic resonance could be optically switched on and off, resulting in the controlled enhancement of the photoluminescence produced by the emitter.…”

Section: Discussionmentioning

confidence: 99%

“…However, a polarization-dependent control of the optical properties of a nanosource would be useful in nano-optics applications. As an example, Zhou et al were able to fabricate a two-color hybrid nanosource by trapping different emitters in the close vicinity of a cylindrical nanoparticle [ 17 ]. The color emitted by this nanosource then depends on the incident in-plane polarization.…”

Section: Introductionmentioning

confidence: 99%

Polarization-dependent strong coupling between silver nanorods and photochromic molecules

Lamri¹,

Veltri²,

Aubard³

et al. 2018

Beilstein J. Nanotechnol.

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Active plasmonics is a key focus for the development of advanced plasmonic applications. By selectively exciting the localized surface plasmon resonance sustained by the short or the long axis of silver nanorods, we demonstrate a polarization-dependent strong coupling between the plasmonic resonance and the excited state of photochromic molecules. By varying the width and the length of the nanorods independently, a clear Rabi splitting appears in the dispersion curves of both resonators.

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Two-Color Single Hybrid Plasmonic Nanoemitters with Real Time Switchable Dominant Emission Wavelength

Cited by 38 publications

References 57 publications

Nanoscale Switching of Near-Infrared Hot Spots in Plasmonic Oligomers Probed by Two-Photon Absorption in Photopolymers

Nanoscale Switching of Near-Infrared Hot Spots in Plasmonic Oligomers Probed by Two-Photon Absorption in Photopolymers

Wavelength-scale light concentrator made by direct 3D laser writing of polymer metamaterials

Polarization-dependent strong coupling between silver nanorods and photochromic molecules

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