Turning on plasmonic lattice modes in metallic nanoantenna arrays via silicon thin films

Sadeghi, Seyed M.; Gutha, Rithvik R.; Wing, Waylin J.

doi:10.1364/ol.41.003367

Cited by 40 publications

(28 citation statements)

References 25 publications

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“…These beams do not excite strong currents in the conductive layer (due to its small thickness), and hence SLRs reappear. Sadeghi et al 128 offered a convenient way to tune SLRs by controlling the coupling of light with plasmon resonances in arrays of metallic nanoantennas with the help of ultrathin layers of conducting silicon. This was accomplished by including a thin film of silicon onto a plasmonic array.…”

Section: Slrs At Normal Incidencementioning

confidence: 99%

Plasmonic Surface Lattice Resonances: A Review of Properties and Applications

et al. 2018

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When metal nanoparticles are arranged in an ordered array, they may scatter light to produce diffracted waves. If one of the diffracted waves then propagates in the plane of the array, it may couple the localized plasmon resonances associated with individual nanoparticles together, leading to an exciting phenomenon, the drastic narrowing of plasmon resonances, down to 1–2 nm in spectral width. This presents a dramatic improvement compared to a typical single particle resonance line width of >80 nm. The very high quality factors of these diffractively coupled plasmon resonances, often referred to as plasmonic surface lattice resonances, and related effects have made this topic a very active and exciting field for fundamental research, and increasingly, these resonances have been investigated for their potential in the development of practical devices for communications, optoelectronics, photovoltaics, data storage, biosensing, and other applications. In the present review article, we describe the basic physical principles and properties of plasmonic surface lattice resonances: the width and quality of the resonances, singularities of the light phase, electric field enhancement, etc. We pay special attention to the conditions of their excitation in different experimental architectures by considering the following: in-plane and out-of-plane polarizations of the incident light, symmetric and asymmetric optical (refractive index) environments, the presence of substrate conductivity, and the presence of an active or magnetic medium. Finally, we review recent progress in applications of plasmonic surface lattice resonances in various fields.

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Section: Slrs At Normal Incidencementioning

confidence: 99%

Plasmonic Surface Lattice Resonances: A Review of Properties and Applications

et al. 2018

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“…After that, the transmittance turns to rise again. This is the typical PLM of the periodic metallic nanoparticles [1,2].…”

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confidence: 88%

“…periodic arrays of metallic nanoparticles [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. When the periodic arrays of the metallic nanoparticles are illuminated by the light with the wavelength around the period of the arrays, the transmittance varies rapidly from the maximum to the minimum in a narrow wavelength band [5].…”

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confidence: 99%

Plasmonic Lattice Mode Formed by Ag Nanospheres on Silica Pillar Arrays

et al. 2018

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“…[ 6–8 ] In addition, significant research has been devoted toward periodic arrays of metallic nanostructures, wherein diffractive coupling of LSPRs is used for the formation of surface lattice resonances (SLRs). [ 9–16 ] The characteristic features of SLRs, including their narrow linewidths, have made them appealing hosts for various applications, including excitonic laser systems, [ 17–19 ] optical filters, [ 20 ] control of the emission of quantum emitters, [ 17,19 ] and biological and chemical sensing. [ 21–23 ]…”

Section: Introductionmentioning

confidence: 99%

Coherent Networks of Si Nanocrystals: Tunable Collective Resonances with Narrow Spectral Widths

Sadeghi

Gutha

2021

Advanced Photonics Research

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The ultralong coherent networks of Si nanocrystals (NCs) via lattice‐enhanced dipole–dipole coupling and the formation of disordered arrays of phase‐correlated field hotspots are studied. Such arrays occur in structures consisting of Si NCs randomly positioned inside long strips that are periodically repeated. The theoretical results predict the formation of all‐dielectric coherent networks of Si NCs, formed via in‐phase coupling of the resonances generated by diffraction of light. Such networks are extended along the lengths of the strips while supporting high field enhancement associated with the phase‐correlated chains of field hotspots between the nanocrystals. It is shown that these phenomena occur at the wavelengths where the Rayleigh anomaly condition is satisfied. Under this condition the electric field is squeezed between two field‐impenetrable regions, causing efficient concentration of electromagnetic energy along the disordered arrays of Si NCs in each strip. The results show that these arrays act as coherently assembled units that are efficiently coupled with the lattice modes, forming highly tunable collective resonances with spectral widths less than 5 nm. These results pave the way for all‐dielectric‐tunable optical filters with very small losses and near‐perfect reflectivity and laser systems based on Si NCs.

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Turning on plasmonic lattice modes in metallic nanoantenna arrays via silicon thin films

Cited by 40 publications

References 25 publications

Plasmonic Surface Lattice Resonances: A Review of Properties and Applications

Plasmonic Surface Lattice Resonances: A Review of Properties and Applications

Plasmonic Lattice Mode Formed by Ag Nanospheres on Silica Pillar Arrays

Coherent Networks of Si Nanocrystals: Tunable Collective Resonances with Narrow Spectral Widths

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