Extraordinary optical transmittance generation on Si<sub>3</sub>N<sub>4</sub> membranes

Macis, Salvatore; Paolozzi, Maria Chiara; D'Arco, Annalisa; Piccirilli, Federica; Stopponi, Veronica; Rossi, Marco; Moia, Fabio; Toma, Andrea; Lupi, Stefano

doi:10.1039/d3nr02834h

Nanoscale

2023

DOI: 10.1039/d3nr02834h

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Extraordinary optical transmittance generation on Si₃N₄ membranes

Salvatore Macis,

Maria Chiara Paolozzi,

Annalisa D'Arco

et al.

Abstract: Optical properties of Si3N4 membranes are modified via patterning of holes to excite surface phonon polaritons and increase transmittance.

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2024

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Terahertz and Infrared Plasmon Polaritons in PtTe₂ Type‐II Dirac Topological Semimetal

Macis,

D'Arco,

Mosesso

et al. 2024

Advanced Materials

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Surface plasmon polaritons (SPPs) are electromagnetic excitations existing at the interface between a metal and a dielectric. SPPs provide a promising path in nanophotonic devices for light manipulation at the micro and nanoscale with applications in optoelectronics, biomedicine, and energy harvesting. Recently, SPPs have been extended to unconventional materials like graphene, transparent oxides, superconductors, and topological systems characterized by linearly dispersive electronic bands. In this case, three‐dimensional Dirac and Weyl semimetals offer a promising frontier for infrared (IR) and terahertz (THz) radiation tuning by topologically‐protected SPPs. In this work, we investigate the THz‐IR optical response, of platinum ditelluride (PtTe2) type‐II Dirac topological semimetal films grown on Si substrates. We detect SPPs generated on microscale ribbon arrays of PtTe2 in the far‐field limit, finding an excellent agreement among measurements, theoretical model, and electromagnetic simulation data. The far‐field measurements have been further supported by near‐field infrared data which indicate a strong electric field enhancement due to the SPP excitation near the ribbon edges. The whole results of this paper, indicate that PtTe2 ribbon array appears an ideal active layout for geometrically tunable SPPs thus inspiring a new fashion of optically tunable materials in the technologically demanding THz and IR spectrum.This article is protected by copyright. All rights reserved

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Terahertz and Infrared Plasmon Polaritons in PtTe₂ Type‐II Dirac Topological Semimetal

Macis,

D'Arco,

Mosesso

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

show abstract

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Extraordinary optical transmittance generation on Si₃N₄ membranes

Abstract: Optical properties of Si3N4 membranes are modified via patterning of holes to excite surface phonon polaritons and increase transmittance.

Cited by 1 publication

References 48 publications

Terahertz and Infrared Plasmon Polaritons in PtTe₂ Type‐II Dirac Topological Semimetal

Terahertz and Infrared Plasmon Polaritons in PtTe₂ Type‐II Dirac Topological Semimetal

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Extraordinary optical transmittance generation on Si3N4 membranes

Abstract: Optical properties of Si3N4 membranes are modified via patterning of holes to excite surface phonon polaritons and increase transmittance.

Cited by 1 publication

References 48 publications

Terahertz and Infrared Plasmon Polaritons in PtTe2 Type‐II Dirac Topological Semimetal

Terahertz and Infrared Plasmon Polaritons in PtTe2 Type‐II Dirac Topological Semimetal

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Product

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Extraordinary optical transmittance generation on Si₃N₄ membranes

Terahertz and Infrared Plasmon Polaritons in PtTe₂ Type‐II Dirac Topological Semimetal

Terahertz and Infrared Plasmon Polaritons in PtTe₂ Type‐II Dirac Topological Semimetal