Resonant optical modes in periodic nanostructures

Pandey, Saurabh; Baburaj, Neethu; Joseph, Shereena; Joseph, Joby

doi:10.1007/s41683-021-00087-0

Cited by 13 publications

(3 citation statements)

References 257 publications

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“…An experimental sensitivity of 1133 nm/RIU is reported with a FOM of 12. It should also be noted that similar dielectric grating on the metallic surface has been of current research interest for producing a bound state in a continuum [323,324] using plasmonic-photonic hybridization in resonant metal-dielectric grating [202,325] that offers high-Q modes for different applications.…”

Section: Hybrid Spp Sensingmentioning

confidence: 99%

Engineering Plasmonic Hybridization toward Advanced Optical Sensors

Sarkar,

König

2023

Advanced Sensor Research

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The requirements for an optical sensor are high: the sensor should be reliable, quick, and simple, and all these features must be provided at ultralow fabrication costs. The requirements go even further, as the sensor may operate without an energy source, and nowadays, the sensor components should be recyclable. Today existing plasmonic concepts and advances in nanofabrication can meet these requirements. This review article describes the available nanoscale components and discusses their reasonable layout to obtain the sensing requirements. It is shown that combining photonic and plasmonic properties helps to get high sensitivity at low losses, where these hybrid modes with simple optical concepts are introduced. The current state of the art in developing lithographic nanostructuring and directed self‐assembly to pave the way for future refractive index sensors is also used. By providing a guideline for advanced sensors, how the individual optical components can be used to create hybrid properties that can be realized cost‐effectively are shown. The review article ends with a discussion on the perspectivs for plasmonic hybridization sensors.

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Section: Hybrid Spp Sensingmentioning

confidence: 99%

Engineering Plasmonic Hybridization toward Advanced Optical Sensors

Sarkar,

König

2023

Advanced Sensor Research

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“…The periodicity results in diffractive order waveguiding phenomena in the ITO waveguide medium i.e. guided mode resonance [6]; grating caused surface plasmon polarization in the spectral neighborhood of Fabry Perot, and localized surface plasmon resonance (LSPR) of individual gold nanoparticles. As computed for optical modes, the incident photonto-electron conversion efficiency(IPCE) impacts the current generation.…”

Section: Introductionmentioning

confidence: 99%

Optical modes enhance solar water splitting in one-dimensional plasmonic particle grating

Pandey,

Joseph,

Ahuja

et al. 2024

Nanophotonics X

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“…Most previous research on photonic crystal cavities is based on two-dimensional (2D) photonic crystals for sensors [8,9], while significant work on cavity field enhancement has been performed with a view to coupling with single emitters [10]. In this and previous works, we have focused our research on 3D photonic crystals, where we have shown partial photonic bandgaps (PBGs) in polymer photonic crystals that were fabricated using direct laser writing, exploiting two-photon polymerization (2PP)-based 3D lithography [11].…”

Section: Introductionmentioning

confidence: 99%

Strongly Confining Light with Air-Mode Cavities in Inverse Rod-Connected Diamond Photonic Crystals

Taverne

Rarity

2022

Crystals

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Three-dimensional dielectric optical crystals with a high index show a complete photonic bandgap (PBG), blocking light propagation in all directions. We show that this bandgap can be used to trap light in low-index defect cavities, leading to strongly enhanced local fields. We compute the band structure and optimize the bandgap of an inverse 3D rod-connected diamond (RCD) structure, using the plane-wave expansion (PWE) method. Selecting a structure with wide bandgap parameters, we then add air defects at the center of one of the high-index rods of the crystal and study the resulting cavity modes by exciting them with a broadband dipole source, using the finite-difference time-domain (FDTD) method. Various defect shapes were studied and showed extremely small normalized mode volumes (Veff) with long cavity storage times (quality factor Q). For an air-filled spherical cavity of radius 0.1 unit-cell, a record small-cavity mode volume of Veff~2.2 × 10−3 cubic wavelengths was obtained with Q~3.5 × 106.

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Resonant optical modes in periodic nanostructures

Cited by 13 publications

References 257 publications

Engineering Plasmonic Hybridization toward Advanced Optical Sensors

Engineering Plasmonic Hybridization toward Advanced Optical Sensors

Optical modes enhance solar water splitting in one-dimensional plasmonic particle grating

Strongly Confining Light with Air-Mode Cavities in Inverse Rod-Connected Diamond Photonic Crystals

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