Strong Coupling between Localized Plasmons and Organic Excitons in Metal Nanovoids

Sugawara, Yoshihiro; Kelf, Timothy A.; Baumberg, Jeremy J.; Abdelsalam, Mamdouh E.; Bartlett, Philip N.

doi:10.1103/physrevlett.97.266808

Cited by 289 publications

(249 citation statements)

References 23 publications

(26 reference statements)

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“…When the incidence angle is in the range of 25°-31°, as marked by the black dashed lines in Fig. 3a, a Rabi splitting-type anticrossing 35,36 between D1 and D3 is observed on both the simulated and measured reflectance spectra (see Supplementary Fig. S1 for the mode exchange details).…”

Section: Pmmamentioning

confidence: 98%

Plasmonic gold mushroom arrays with refractive index sensing figures of merit approaching the theoretical limit

et al. 2013

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Localized surface plasmon resonance (LSPR)-based sensing has found wide applications in medical diagnosis, food safety regulation and environmental monitoring. Compared with commercial propagating surface plasmon resonance (PSPR)-based sensors, LSPR ones are simple, cost-effective and suitable for measuring local refractive index changes. However, the figure of merit (FOM) values of LSPR sensors are generally 1-2 orders of magnitude smaller than those of PSPR ones, preventing the widespread use of LSPR sensors. Here we describe an array of submicrometer gold mushrooms with a FOM reaching B108, which is comparable to the theoretically predicted upper limit for standard PSPR sensors. Such a high FOM arises from the interference between Wood's anomaly and the LSPRs. We further demonstrate the array as a biosensor for detecting cytochrome c and alpha-fetoprotein, with their detection limits down to 200 pM and 15 ng ml À 1 , respectively, suggesting that the array is a promising candidate for label-free biomedical sensing.

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Section: Pmmamentioning

confidence: 98%

Plasmonic gold mushroom arrays with refractive index sensing figures of merit approaching the theoretical limit

et al. 2013

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“…At this point, the interaction between LSPs and excitons has not been explained by the dielectric function. Moreover, according to whether there is perturbation between wave functions, the coupling between LSPs and excitons can be divided into strong coupling and weak coupling [58]. When the molecule and the SP are coupled into a hybrid state, there is a perturbation between wave functions.…”

Section: Brief Introduction To the Interaction Between Lsps And Excitonsmentioning

confidence: 99%

Exciton-plasmon coupling interactions: from principle to applications

et al. 2017

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Abstract:The interaction of exciton-plasmon coupling and the conversion of exciton-plasmon-photon have been widely investigated experimentally and theoretically. In this review, we introduce the exciton-plasmon interaction from basic principle to applications. There are two kinds of exciton-plasmon coupling, which demonstrate different optical properties. The strong exciton-plasmon coupling results in two new mixed states of light and matter separated energetically by a Rabi splitting that exhibits a characteristic anticrossing behavior of the exciton-LSP energy tuning. Compared to strong coupling, such as surface-enhanced Raman scattering, surface plasmon (SP)-enhanced absorption, enhanced fluorescence, or fluorescence quenching, there is no perturbation between wave functions; the interaction here is called the weak coupling. SP resonance (SPR) arises from the collective oscillation induced by the electromagnetic field of light and can be used for investigating the interaction between light and matter beyond the diffraction limit. The study on the interaction between SPR and exaction has drawn wide attention since its discovery not only due to its contribution in deepening and broadening the understanding of SPR but also its contribution to its application in light-emitting diodes, solar cells, low threshold laser, biomedical detection, quantum information processing, and so on.

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“…In fact, J-aggregate dyes have been well-known in the photonics community for strong coupling and dye-sensitizer studies [5,[14][15][16]. Exciton transport in Jaggregates was also considered for excitonic circuits that can enable control of optical energy transport at the molecular level [17].…”

Section: Introductionmentioning

confidence: 99%

Surface bound waves and optical interactions in excitonic thin films

Lee

Woo

Seo

et al. 2018

Opt. Mater. Express

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Excitonic films such as J-aggregate-doped polymer films can exhibit sharp Lorentzian dispersions and thus have various optical features in the visible region. They can even show an optically metallic response and can be considered as alternative plasmonic materials. However, there were no systematic studies on optical interactions in such excitonic films. Here, we perform theoretical investigations on optical modes and interactions in planar excitonic thin films. We gradually vary the dye concentration and the film thickness and study optical coupling to surface bound waves (surface polariton modes and epsilon-near-zero modes). We also investigate thin-film interferences in high-loss and low-loss regimes. Finally, we discuss the freespace impedance matching that can result from the Lorentzian dispersion in excitonic films. Our work enables in-depth understandings on optical interactions in excitonic films and it can provide guidelines for various nanophotonic applications in the visible region.

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Strong Coupling between Localized Plasmons and Organic Excitons in Metal Nanovoids

Cited by 289 publications

References 23 publications

Plasmonic gold mushroom arrays with refractive index sensing figures of merit approaching the theoretical limit

Plasmonic gold mushroom arrays with refractive index sensing figures of merit approaching the theoretical limit

Exciton-plasmon coupling interactions: from principle to applications

Surface bound waves and optical interactions in excitonic thin films

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