Band-edge engineering for controlled multi-modal nanolasing in plasmonic superlattices

Wang, Danqing; Yang, Ankun; Wang, Weijia; Hua, Yi; Schaller, Richard D.; Schatz, George C.; Odom, Teri W.

doi:10.1038/nnano.2017.126

Cited by 176 publications

(237 citation statements)

References 30 publications

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“…S17), typical for electron-phonon scattering (43). The decay lifetime of the bleaching signal at the SLR wavelength (2.3 ps) was longer than that of the LSP because of suppressed radiative loss from diffractive coupling (45). Compared with the mixed states for the AgNPs@MOF system ( Fig.…”

Section: Resultsmentioning

confidence: 95%

Spatially defined molecular emitters coupled to plasmonic nanoparticle arrays

Liu

Wang

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

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This paper describes how metal-organic frameworks (MOFs) conformally coated on plasmonic nanoparticle arrays can support excitonplasmon modes with features resembling strong coupling but that are better understood by a weak coupling model. Thin films of Znporphyrin MOFs were assembled by dip coating on arrays of silver nanoparticles (NP@MOF) that sustain surface lattice resonances (SLRs). Coupling of excitons with these lattice plasmons led to an SLR-like mixed mode in both transmission and transient absorption spectra. The spectral position of the mixed mode could be tailored by detuning the SLR in different refractive index environments and by changing the periodicity of the nanoparticle array. Photoluminescence showed mode splitting that can be interpreted as modulation of the exciton line shape by the Fano profile of the surface lattice mode, without requiring Rabi splitting. Compared with pristine Znporphyrin, hybrid NP@MOF structures achieved a 16-fold enhancement in emission intensity. Our results establish MOFs as a crystalline molecular emitter material that can couple with plasmonic structures for energy exchange and transfer. metal-organic framework | plasmonic nanoparticle arrays | conformal coating | surface lattice resonance | photoluminescence P lasmonic nanoparticles (NPs) are driving advances in nanophotonics (1, 2) and photochemistry (3, 4) because of their ability to concentrate and convert optical excitations into heat production, hot-electron generation, and light localization (5). Interactions between the localized surface plasmons (LSPs) (6) of isolated metallic NPs and excitons from molecular emitters can both enhance light absorption and emission (7) and engineer radiative and nonradiative decay pathways (8). Compared with LSPs, surface lattice resonances (SLRs), also referred to as lattice plasmons, are collective modes supported in arrays of NPs that exhibit stronger near-electric field enhancements and higher quality factors Q (9, 10). Because SLRs result from hybridization of LSPs on individual NPs with Bragg diffraction modes from the array (11, 12), their resonance wavelength can be tuned by changing local dielectric environment and lattice periodicity (13,14). Strong coupling between excitons and surface plasmons has been demonstrated by integrating emitters such as single-walled carbon nanotubes (15), monolayer MoS 2 (16), organic dyes (17)(18)(19), and light-harvesting complexes (20, 21) with plasmonic NP arrays.Plasmon-exciton coupling is sensitive to the location of emitters (22): those very close to the NPs are quenched (8), whereas the ones beyond the near-field region show little effect (23). Reports of coupling between organic dyes and plasmonic NP arrays have limited control over emitter locations, and hence, exciton contributions to the mixed SLR-exciton states cannot be tuned (17)(18)(19). Although strong exciton-SLR coupling can be obtained at high dye concentrations (24), such densities typically result in aggregation-induced photoluminescence quenching (25). Thus, the...

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Section: Resultsmentioning

confidence: 95%

Spatially defined molecular emitters coupled to plasmonic nanoparticle arrays

Liu

Wang

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

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“…The existence of interference patterns over the whole sample, furthermore, proves the spatial coherence of the observed lasing. Since the K -point of our system corresponds to the crossing of diffractive orders in three directions with 120 • angles between them, the feedback in the lasing action is two dimensional, different from one dimensional DFB lasing [2] in nanoparticle arrays [24,25,28,45]. This is reflected in the non-trivial 2D polarization patterns.…”

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confidence: 99%

Lasing at K Points of a Honeycomb Plasmonic Lattice

et al. 2019

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We study lasing at the high-symmetry points of the Brillouin zone in a honeycomb plasmonic lattice. We use symmetry arguments to define singlet and doublet modes at the K -points of the reciprocal space. We experimentally demonstrate lasing at the K -points that is based on plasmonic lattice modes and two-dimensional feedback. By comparing polarization properties to T -matrix simulations, we identify the lasing mode as one of the singlets with an energy minimum at the Kpoint enabling feedback. Our results offer prospects for studies of topological lasing in radiatively coupled systems.

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“…16,17 Recently, multi-modal nanolasing from gold NP superlattices associated with a four level gain system has been reported in the spectral region 860-880 nm. 18 However, the availability of multiline emission at different spectral ranges from a single plasmon-assisted laser is highly desirable to extend the potential functionality of this class of systems, and to allow highly integrated and compact reliable devices. In particular, the ability of providing simultaneous coherent radiation at the near infrared region (NIR) and at the green and blue visible spectral regions is relevant to a variety of fields including high resolution multicolor imaging and displays, ultra-extreme sensing, ultra-dense optical circuits or ultrahigh-density data storage.…”

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Multiline Operation from a Single Plasmon-Assisted Laser

et al. 2017

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Esta es la versión de autor del artículo publicado en: This is an author produced version of a paper published in:El acceso a la versión del editor puede requerir la suscripción del recurso Access to the published version may require subscription ABSTRACT -The demonstration of plasmon-assisted lasing by associating optical gain media with plasmonic nanostructures has led to a new generation of nanophotonic devices with unprecedented performances. However, despite the variety of designs demonstrated so far, the operation of these systems is in most cases limited to a single output wavelength, and some reports on multiline emission refer to mixing single nanolasers with the subsequent limitation in compactness. Here, we show multiline operation from a single plasmon-assisted nonlinear solid-state laser on which a linear chain of Ag nanoparticles is deposited. The system provides lasing at 1.08 µm, which is self-converted to the visible range through different parametric frequency-mixing processes generated at metal-dielectric interfaces. Near infrared and simultaneously green and tunable blue radiation with a sub-wavelength confinement in the direction perpendicular to the nanoparticle chain, are obtained at room temperature in CW regime. The results demonstrate the possibility of multifunctional operation from a single plasmon-assisted laser, and offer new avenues for the development of highly integrable sources of coherent radiation.

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Band-edge engineering for controlled multi-modal nanolasing in plasmonic superlattices

Cited by 176 publications

References 30 publications

Spatially defined molecular emitters coupled to plasmonic nanoparticle arrays

Spatially defined molecular emitters coupled to plasmonic nanoparticle arrays

Lasing at K Points of a Honeycomb Plasmonic Lattice

Multiline Operation from a Single Plasmon-Assisted Laser

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