Long-range surface plasmons in multilayer structures

Delfan, Aida; Degli-Eredi, Iterio; Sipe, J. E.

doi:10.1364/josab.32.001615

Cited by 16 publications

(10 citation statements)

References 24 publications

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“…The formulas obtained permit application in quite general situations accounting for angular dependence of the incoming wave. The estimation of optimal conditions of excitation on LRSPP in planar layered media also benefit from this calculation method (Konopsky and Alieva, 2009;Delfan et al, 2015).…”

Section: Design Of Single and Multiple Optical Tamm Statesmentioning

confidence: 99%

Strong Coupling, Hyperbolic Metamaterials and Optical Tamm States in Layered Dielectric-Plasmonic Media

Gonçalves

2021

Front. Nanotechnol.

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Thin films of noble metals with thickness smaller than the wavelength of light constitute one of the most investigated structures in plasmonics. The fact that surface plasmon modes can be excited in these films by different ways and the simplicity of fabrication offer ideal conditions for applications in nanophotonics. The generation of optical modes in coupled Fabry-Pérot planar cavities and their migration to hyperbolic metamaterials is investigated. Coupled Fabry-Pérot cavities behave as simple coupled resonators. When the intra-cavity media have different refractive indices in two or more coupled cavities resonance anti-crossings arise. The application of this kind of strong coupling in sensing is foreseen. Beyond the cavity modes excited by propagating waves, also long range plasmonic guided modes can be excited using emitters or evanescent waves. A periodic structure made by multiple plasmonic films and dielectrica supports bulk plasmons, of large propagation constant and increasing field amplitude. The optical response of these structures approaches that of the hyperbolic metamaterial predicted by the effective medium theory. Light can propagate with full transmission in a structure made of a photonic crystal based on quarter wavelength layers and a second photonic crystal with an overlapping forbidden band, but presenting a non-trivial topological phase achieved by band inversion. This is due to excitation of optical Tamm states at the boundary between both crystals. The extension to multiple optical Tamm states using dielectric and plasmonic materials and the symmetries of the edge states is investigated.

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Section: Design Of Single and Multiple Optical Tamm Statesmentioning

confidence: 99%

Strong Coupling, Hyperbolic Metamaterials and Optical Tamm States in Layered Dielectric-Plasmonic Media

Gonçalves

2021

Front. Nanotechnol.

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“…being the interface transfer matrices [14,15] associated with the PC unit cell structure. Using this transfer matrix formalism, we can calculate the power flow in the semi-infinite PC, labelled as P PC , to be…”

Section: And In the Remainder Of The Cladding Regionmentioning

confidence: 99%

“…with ξ the eigenvalue of m unit equal to ξ η − ffiffiffiffiffiffiffiffiffiffiffi ffi η 2 − 1 p with η a d ∕2, assuming a d > 0. For lossless PCs operating in their bandgap, ξ is real and jξj < 1 [15]; P UC is the power flow in the top PC unit cell and is given by…”

Section: And In the Remainder Of The Cladding Regionmentioning

confidence: 99%

“…For a selected value of κ m in the range considered, determine the different PC configurations for which the BSWs share this wave number. To do so, for each possible value of d L , calculate the corresponding thickness d H that satisfies the dispersion relation of the BSW, ξ − a bR top , at κ κ m and label it d H;m [9,15]. This step can be performed analytically without the need for a numerical sweep [9].…”

Section: And In the Remainder Of The Cladding Regionmentioning

confidence: 99%

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Power-flow-based design strategy for Bloch surface wave biosensors

2018

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“…Previous demonstrations of the LRSPP waveguides utilized polymers or index matching oils to achieve the required index match between the top and bottom layers. Several variants of the LRSSP waveguide have been studied, employing semi-infinite multilayer structure, 1D photonic crystal structures, and asymmetrical layer structures, , that support long-distance propagating modes. Most of these designs still employ either a cladding layer identical to the substrate or very complex fabrication techniques.…”

mentioning

confidence: 99%

On-Chip Hybrid Photonic-Plasmonic Waveguides with Ultrathin Titanium Nitride Films

et al. 2018

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A solid-state hybrid photonic–plasmonic (HPP) waveguide geometry has been experimentally demonstrated with plasmonic titanium nitride. The configuration is made with robust fabrication techniques, CMOS-compatible materials, and features a straightforward design with dielectric cladding layers that exhibit a significant index mismatch with the substrate. The resulting waveguide is shown to reduce both the propagation loss (0.6 dB/mm) and mode size (7.7 μm) when compared to previously reported long-range surface plasmon polariton (LRSPP) waveguides using both noble metal and alternative metals of similar configurations. In addition, the structure removes the need to match the cladding indices with the substrate index, allowing for a thin film superstrate cladding (∼300 nm) that can be readily deposited using numerous methods. This flexibility allows for additional optimization factors to be considered in the design, such as metal film epitaxy, etching selectivity, device function, and compatibility with subsequent fabrication steps. For example, the top cladding layer can be made of silicon nitride for photonic circuits, a gain medium for loss compensation, as well as lithium niobate or zinc oxide for electrical or optical modulation, without sacrificing performance.

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Long-range surface plasmons in multilayer structures

Cited by 16 publications

References 24 publications

Strong Coupling, Hyperbolic Metamaterials and Optical Tamm States in Layered Dielectric-Plasmonic Media

Strong Coupling, Hyperbolic Metamaterials and Optical Tamm States in Layered Dielectric-Plasmonic Media

Power-flow-based design strategy for Bloch surface wave biosensors

On-Chip Hybrid Photonic-Plasmonic Waveguides with Ultrathin Titanium Nitride Films

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