Geometry dependence of surface lattice resonances in plasmonic nanoparticle arrays

Guo, Rui; Hakala, Tommi K.; Törmä, Païvi

doi:10.1103/physrevb.95.155423

Cited by 140 publications

(151 citation statements)

References 46 publications

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“…The group of Törmä further extended these findings with the addition of a Lieb lattice geometry. They have introduced a simple Dirac model to understand the importance of diffraction orders in different lattices . Here, it is noteworthy that the SLR also has a dispersive nature similar to gratings, which becomes important for coherent energy transfer to a gain material.…”

Section: Spectroscopic Properties Of Tunable Plasmonic Latticesmentioning

confidence: 99%

“…Similarly, a Lieb lattice has three times more particles within the unit cell than the square lattice and thus exhibits a higher extinction. In terms of advantages, a suitable lattice geometry can hold specific symmetries and coupling which can further be used in bandgap openings, Dirac points, and topological phases . These lattice geometries are promising candidates for lasing phenomena, which so far have been observed only in square and rectangular lattices .…”

Section: Spectroscopic Properties Of Tunable Plasmonic Latticesmentioning

confidence: 99%

“…Bottom: calculated photon energy and diffraction orders (DOs) for transverse electric (TE) polarized light of the respective lattices. Reproduced with permission . Copyright 2017, American Physical Society.…”

Section: Spectroscopic Properties Of Tunable Plasmonic Latticesmentioning

confidence: 99%

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Mechanotunable Plasmonic Properties of Colloidal Assemblies

Brasse

Gupta

Schollbach

et al. 2019

Adv Materials Inter

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Noble metal nanoparticles can absorb incident light very efficiently due to their ability to support localized surface plasmon resonances (LSPRs), collective oscillations of the free electron cloud. LSPRs lead to strong, nanoscale confinement of electromagnetic energy which facilitates applications in many fields including sensing, photonics, or catalysis. In these applications, damping of the LSPR caused by inter‐ and intraband transitions is a limiting factor due to the associated energy losses and line broadening. The losses and broad linewidth can be mitigated by arranging the particles into periodic lattices. Recent advances in particle synthesis, (self‐)assembly, and fabrication techniques allow for the realization of collective coupling effects building on various particle sizes, geometries, and compositions. Beyond assemblies on static substrates, by assembling or printing on mechanically deformable surfaces a modulation of the lattice periodicity is possible. This enables significant alteration and tuning of the optical properties. This progress report focuses on this novel approach for tunable spectroscopic properties with a particular focus on low‐cost and large‐area fabrication techniques for functional plasmonic lattices. The report concludes with a discussion of the perspectives for expanding the mechanotunable colloidal concept to responsive structures and flexible devices.

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Section: Spectroscopic Properties Of Tunable Plasmonic Latticesmentioning

confidence: 99%

Section: Spectroscopic Properties Of Tunable Plasmonic Latticesmentioning

confidence: 99%

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Mechanotunable Plasmonic Properties of Colloidal Assemblies

Brasse

Gupta

Schollbach

et al. 2019

Adv Materials Inter

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“…The different SLR bands have distinct polarization properties that can be probed in the transmission measurement. 41 This will be relevant later for color selection in our dual-wavelength lasers. Figure 1e shows momentum-resolved transmission spectra of an array with the same geometry as shown in Figure 1d Now that we understand the band structure of periodically arranged plasmonic particles in a homogeneous medium, we next integrate the QDs.…”

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confidence: 99%

Dual-Wavelength Lasing in Quantum-Dot Plasmonic Lattice Lasers

et al. 2020

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Arrays of metallic particles patterned on a substrate have emerged as a promising design for on-chip plasmonic lasers. In past examples of such devices, the periodic particles provided feedback at a single resonance wavelength, and organic dye molecules were used as the gain material.Here, we introduce a flexible template-based fabrication method that allows a broader design space for Ag particle-array lasers. Instead of dye molecules, we integrate colloidal quantum dots (QDs), which offer better photostability and wavelength tunability. Our fabrication approach also allows us to easily adjust the refractive index of the substrate and the QD-film thickness. Exploiting these capabilities, we demonstrate not only single-wavelength lasing but dual-wavelength lasing via two distinct strategies. First, by using particle arrays with rectangular lattice symmetries, we obtain feedback from two orthogonal directions. The two output wavelengths from this laser can be selected individually using a linear polarizer. Second, by adjusting the QD-film thickness, we use higher-order transverse waveguide modes in the QD film to obtain dual-wavelength lasing at normal and off-normal angles from a symmetric square array. We thus show that our approach offers various design possibilities to tune the laser output.

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“…NPs resonant at 590nm are considered in the following. Then, by decreasing the NPs spatial density to increase the plate transparency, possible diffraction orders and surface lattice ISSN 0097-996X/19/4801-0295-$1.00 © 2019 SID resonances [3] of the square lattice reflectance spectrum disappear in the case of the disordered array ( Fig. 2 a,b).…”

mentioning

confidence: 99%

21‐4: Plasmonic Nanostructures Array with Correlated Disorder for Augmented Reality

Bertin

Brûlé

Magno

et al. 2019

Symp Digest of Tech Papers

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Augmented reality makes life easier for users in different domains like education, industry, and medicine. Head-up displays (HUD), used in the automotive domain, can be seen as one early development of augmented reality systems. HUD consists in reflecting a colored display on a transparent glass plate which indicates driving relevant information to the driver. In order to reduce display consumption and/or to obtain sufficient contrast in case of sunny weather, it is necessary to increase the plate reflectance at image color wavelengths. More precisely, the challenge is to develop a plate with simultaneously high reflectance, high angular tolerance and high transparency, providing a clear reflected picture and a clear view of the landscape behind the plate. Among different technologies, localized plasmonics, based on noble metal nanoparticles (NPs) resonances, enables local modification of colors and versatile HUD plate designs [1,2]. Usually, designs of resonant NPs arrays are performed considering periodic layout, more suitable for current numerical tools. However, disordered arrangement presents several advantages: attenuated light diffraction, possible low cost and large scale fabrication, versatile design. (a) (b) (c) (d) Fig. 1. Fabricated samples: (a) SEM images of the square lattice (left) and correlated disorder (right) NPs arrangements. Backlit photography of the sample with pairs of "Sq" and "Rd" arrays with 200nm (Sq) and 216nm (Rd) average interparticle distances and different ellipses diameters (formatted as "a x b" given in nm). (b) Reflectance and transmittance spectra for Sq and Rd arrays with identical NPs and both polarizations. (c,d) Reflectance and transmittance peaks spectral positions of all arrays and different angles for both polarizations.Here we first experimentally show that subwavelength period square lattice NPs arrays present similar reflection and transmission properties to the corresponding disordered ones with the same spatial density, regardless of the resonance wavelength, the polarization (p or s) and the angle of the incident light (Fig. 1). The resonance peaks are tuned by modifying the size of the NPs. The reflectance maxima follow the plasmonic resonance intensity, dependent on the wavelength. The targeted color in this work is amber, corresponding to 590nm wavelength. NPs resonant at 590nm are considered in the following. Then, by decreasing the NPs spatial density to increase the plate transparency, possible diffraction orders and surface lattice

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Geometry dependence of surface lattice resonances in plasmonic nanoparticle arrays

Cited by 140 publications

References 46 publications

Mechanotunable Plasmonic Properties of Colloidal Assemblies

Mechanotunable Plasmonic Properties of Colloidal Assemblies

Dual-Wavelength Lasing in Quantum-Dot Plasmonic Lattice Lasers

21‐4: Plasmonic Nanostructures Array with Correlated Disorder for Augmented Reality

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