Common Metal-Dielectric-Metal Nanocavities for Multispectral Narrowband Light Absorption

Liu, Zhengqi; Liu, Guiqiang; Fu, Guolan; Huang, Shan; Ren, Shiwen; Wang, Zhengwang; Liu, Mulin; Liu, Xiaoshan

doi:10.1007/s11468-015-0109-x

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…In this subsection, we will discuss about out-of-plane composite nanostructures as a multiresonant plasmonic system. A common type of out-of-plane composite plasmonic system is based on multilayered MIM nanostructures consisting of alternative stacks of metal and dielectric (insulator) layers [134][135][136][137][138][139][140][141][142][143][144][145]. Figure 6A shows the energy diagram for a MIM nanocavity composed of two closely spaced metallic slabs under the normal incidence light illumination with polarization along the x-axis [146][147][148].…”

Section: Out-of-plane Composite Nanostructuresmentioning

confidence: 99%

Multiresonant plasmonics with spatial mode overlap: overview and outlook

Tali

Zhou

2019

Nanophotonics

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Plasmonic nanostructures can concentrate light and enhance light-matter interactions in the subwavelength domain, which is useful for photodetection, light emission, optical biosensing, and spectroscopy. However, conventional plasmonic devices and systems are typically optimized for the operation in a single wavelength band and thus are not suitable for multiband nanophotonics applications that either prefer nanoplasmonic enhancement of multiphoton processes in a quantum system at multiple resonant wavelengths or require wavelength-multiplexed operations at nanoscale. To overcome the limitations of “single-resonant plasmonics,” we need to develop the strategies to achieve “multiresonant plasmonics” for nanoplasmonic enhancement of light-matter interactions at the same locations in multiple wavelength bands. In this review, we summarize the recent advances in the study of the multiresonant plasmonic systems with spatial mode overlap. In particular, we explain and emphasize the method of “plasmonic mode hybridization” as a general strategy to design and build multiresonant plasmonic systems with spatial mode overlap. By closely assembling multiple plasmonic building blocks into a composite plasmonic system, multiple nonorthogonal elementary plasmonic modes with spectral and spatial mode overlap can strongly couple with each other to form multiple spatially overlapping new hybridized modes at different resonant energies. Multiresonant plasmonic systems can be generally categorized into three types according to the localization characteristics of elementary modes before mode hybridization, and can be based on the optical coupling between: (1) two or more localized modes, (2) localized and delocalized modes, and (3) two or more delocalized modes. Finally, this review provides a discussion about how multiresonant plasmonics with spatial mode overlap can play a unique and significant role in some current and potential applications, such as (1) multiphoton nonlinear optical and upconversion luminescence nanodevices by enabling a simultaneous enhancement of optical excitation and radiation processes at multiple different wavelengths and (2) multiband multimodal optical nanodevices by achieving wavelength multiplexed optical multimodalities at a nanoscale footprint.

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Section: Out-of-plane Composite Nanostructuresmentioning

confidence: 99%

Multiresonant plasmonics with spatial mode overlap: overview and outlook

Tali

Zhou

2019

Nanophotonics

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Achieving the polarization-manipulated multispectral perfect absorption and sensitive sensing via a metal/insulator/metal elliptical nanocavity array

Cai

Zhang

Cai

et al. 2020

Opt Rev

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Recent Progress on Plasmon-Enhanced Fluorescence

et al. 2015

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Abstract:The optically generated collective electron density waves on metal-dielectric boundaries known as surface plasmons have been of great scientific interest since their discovery. Being electromagnetic waves on gold or silver nanoparticle's surface, localised surface plasmons (LSP) can strongly enhance the electromagnetic field. These strong electromagnetic fields near the metal surfaces have been used in various applications like surface enhanced spectroscopy (SES), plasmonic lithography, plasmonic trapping of particles, and plasmonic catalysis. Resonant coupling of LSPs to fluorophore can strongly enhance the emission intensity, the angular distribution, and the polarisation of the emitted radiation and even the speed of radiative decay, which is so-called plasmon enhanced fluorescence (PEF). As a result, more and more reports on surface-enhanced fluorescence have appeared, such as SPASER-s, plasmon assisted lasing, single molecule fluorescence measurements, surface plasmoncoupled emission (SPCE) in biological sensing, optical orbit designs etc. In this review, we focus on recent advanced reports on plasmon-enhanced fluorescence (PEF). First, the mechanism of PEF and early results of enhanced fluorescence observed by metal nanostructure will be introduced. Then, the enhanced substrates, including periodical and nonperiodical nanostructure, will be discussed and the most important factor of the spacer between molecule and surface and wavelength dependence on PEF is demonstrated. Finally, the recent progress of tipenhanced fluorescence and PEF from the rare-earth doped up-conversion (UC) and down-conversion (DC) nanoparticles (NPs) are also commented upon. This review provides an introduction to fundamentals of PEF, illustrates the current progress in the design of metallic nanostructures for efficient fluorescence signal amplification that utilises propagating and localised surface plasmons.

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Common Metal-Dielectric-Metal Nanocavities for Multispectral Narrowband Light Absorption

Cited by 3 publications

References 35 publications

Multiresonant plasmonics with spatial mode overlap: overview and outlook

Multiresonant plasmonics with spatial mode overlap: overview and outlook

Achieving the polarization-manipulated multispectral perfect absorption and sensitive sensing via a metal/insulator/metal elliptical nanocavity array

Recent Progress on Plasmon-Enhanced Fluorescence

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