Effective-medium permittivity of one-dimensional gratings of vertically invariant and laterally arbitrary permittivity distribution

Li, Lifeng

doi:10.1080/09500340.2019.1577507

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…As a result, the vector of P g and the spatially averaged induced current contain the effect of the dipolar moment, as well as the effect of all higher-order multipolar moments. The starting point of our analysis is the power expansion of the nonlocal effective permittivity ˜ (ω, k) in terms of the small parameter η (the period-to-wavelength ratio) as [36,37]…”

Section: Formalism and Techniques Usedmentioning

confidence: 99%

Multipole Excitations and Nonlocality in 1d Plasmonic Nanostructures

Goncharenko

Silkin

2023

Nanomaterials

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Efficient simulation methods for taking nonlocal effects in nanostructures into account have been developed, but they are usually computationally expensive or provide little insight into underlying physics. A multipolar expansion approach, among others, holds promise to properly describe electromagnetic interactions in complex nanosystems. Conventionally, the electric dipole dominates in plasmonic nanostructures, while higher order multipoles, especially the magnetic dipole, electric quadrupole, magnetic quadrupole, and electric octopole, can be responsible for many optical phenomena. The higher order multipoles not only result in specific optical resonances, but they are also involved in the cross-multipole coupling, thus giving rise to new effects. In this work, we introduce a simple yet accurate simulation modeling technique, based on the transfer-matrix method, to compute higher-order nonlocal corrections to the effective permittivity of 1d plasmonic periodic nanostructures. In particular, we show how to specify the material parameters and the arrangement of the nanolayers in order to maximize or minimize various nonlocal corrections. The obtained results provide a framework for guiding and interpreting experiments, as well as for designing metamaterials with desired dielectric and optical properties.

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Section: Formalism and Techniques Usedmentioning

confidence: 99%

Multipole Excitations and Nonlocality in 1d Plasmonic Nanostructures

Goncharenko

Silkin

2023

Nanomaterials

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“…Power splitters [5][6][7][8] are also part of many optical devices, such as wavelength multiplexers [9][10][11][12], optical switches [13][14][15][16], etc. They are widely used in the fields of optical fiber communication [17][18][19][20][21], optical image processing [22][23][24] and optical storage [25,26]. The diffraction order of the beam splitter is related to the incident wavelength and the period of the grating.…”

Section: Introductionmentioning

confidence: 99%

Four equal-intensity laser output and physical analysis generated by reflective grating with a silver plate

Gao¹,

Wang²

2019

Laser Phys.

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In this paper, four equal-intensity laser output is described by reflective grating under normal incidence. When the duty cycle is 0.32 and the period is 3465 nm, the grating structure is analyzed by a rigorous coupled-wave method, where a good four-output beam-splitter effect can be obtained. Each reflective efficiency of the four orders is more than 20% for metasurface structure with a silver plate. The optimized results show that the grating has good performance and good application value in the field of multi-channel laser devices. In addition, the coupling mechanism of four-output reflective gratings can be well explained by the study of overlapping integral and field distribution.

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Cascaded HfO ₂ /SiO ₂ microstructure for symmetrical two-port beam dispersion

Zou,

Wang

2023

Journal of Electromagnetic Waves and Applications

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Effective-medium permittivity of one-dimensional gratings of vertically invariant and laterally arbitrary permittivity distribution

Cited by 4 publications

References 14 publications

Multipole Excitations and Nonlocality in 1d Plasmonic Nanostructures

Multipole Excitations and Nonlocality in 1d Plasmonic Nanostructures

Four equal-intensity laser output and physical analysis generated by reflective grating with a silver plate

Cascaded HfO ₂ /SiO ₂ microstructure for symmetrical two-port beam dispersion

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Effective-medium permittivity of one-dimensional gratings of vertically invariant and laterally arbitrary permittivity distribution

Cited by 4 publications

References 14 publications

Multipole Excitations and Nonlocality in 1d Plasmonic Nanostructures

Multipole Excitations and Nonlocality in 1d Plasmonic Nanostructures

Four equal-intensity laser output and physical analysis generated by reflective grating with a silver plate

Cascaded HfO 2 /SiO 2 microstructure for symmetrical two-port beam dispersion

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Cascaded HfO ₂ /SiO ₂ microstructure for symmetrical two-port beam dispersion