Multipole analysis of light scattering by arbitrary-shaped nanoparticles on a plane surface

Evlyukhin, Andrey B.; Reinhardt, Carsten; Evlyukhin, Egor; Chichkov, Boris N.

doi:10.1364/josab.30.002589

Cited by 144 publications

(131 citation statements)

References 45 publications

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“…Our multipole analysis (see [16] for details, the multi-pole decomposition formulas will not be shown here), shows that in the case of the frontal excitation ( fig. 1A-a) the first optical resonance can correspond to the resonances of different multipole moments of the nanoparticles de-pending on the size parameters).…”

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confidence: 95%

Magnetic field concentration with coaxial silicon nanocylinders in the optical spectral range

et al. 2017

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mentioning

confidence: 95%

Magnetic field concentration with coaxial silicon nanocylinders in the optical spectral range

et al. 2017

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“…Efficient anti-reflection coatings (AR) have been intensively studied with many different approaches having been explored for this purpose [1][2][3] , such as multi-layered thinfilms 4,5 , graded index matching via surface texturing with micro-and nano-structures [6][7][8][9][10][11] , plasmonic metasurfaces [12][13][14] and more recently, metasurfaces [15][16][17][18][19][20][21] based on ordered arrays of sub-micrometric dielectric antennas (dielectric Mie resonators [22][23][24][25][26][27][28] ). Depending on the application of the AR different aspects (lowest value of the total reflectance, broad spectral range, broad acceptance angle, transparency or light trapping) determine the optimal features and fabrication method.…”

Section: Introductionmentioning

confidence: 99%

Self-assembled antireflection coatings for light trapping based on SiGe random metasurfaces

Bouabdellaoui

Checcucci

Wood

et al. 2018

Phys. Rev. Materials

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We demonstrate a simple self-assembly method based on solid state dewetting of ultra-thin silicon films and germanium deposition for the fabrication of efficient anti reflection coatings on silicon for light trapping. Via solid state dewetting of ultra-thin silicon on insulator and epitaxial deposition of Ge we fabricate SiGe islands with a high surface density, randomly positioned and broadly varied in size. This allows to reduce the reflectance to low values in a broad spectral range (from 500 nm to 2500 nm) and a broad angle (up to 55 degrees) and to trap within the wafer a large portion of the impinging light (∼40%) also below the band-gap, where the Si substrate is non-absorbing. Theoretical simulations agree with the experimental results showing that the efficient light coupling into the substrate mediated by Mie resonances formed within the SiGe islands. This lithography-free method can be implemented on arbitrarily thick or thin SiO2 layers and its duration only depends on the sample thickness and on the annealing temperature.

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“…2(b)], we notice that although the field at the smaller base (or tip) of the cone becomes progressively weaker as ζ increases, the mode maintains the characteristic outside field pattern of a fundamental dipole resonance for all nanoparticles. To reconfirm this, we calculate the extinction cross section of conical nanoparticles using the discrete dipole approximation (DDA) method [50,51]. Figure 2(c) shows that extinction properties of the nanoparticles are fully reproduced if only the electric dipole moment is kept in the cases of both low and high asymmetry.…”

Section: Directional Photoemission From Conical Nanoparticlesmentioning

confidence: 74%

Giant Photogalvanic Effect in Noncentrosymmetric Plasmonic Nanoparticles

et al. 2014

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Photoelectric properties of noncentrosymmetric, similarly oriented metallic nanoparticles embedded in a homogeneous semiconductor matrix are theoretically studied. Because of the asymmetric shape of the nanoparticle boundary, photoelectron emission acquires a preferred direction, resulting in a photocurrent flow in that direction when nanoparticles are uniformly illuminated by a homogeneous plane wave. This effect is a direct analogy of the photogalvanic (or bulk photovoltaic) effect known to exist in media with noncentrosymmetric crystal structure, such as doped lithium niobate or bismuth ferrite, but is several orders of magnitude stronger. Termed the giant plasmonic photogalvanic effect, the reported phenomenon is valuable for characterizing photoemission and photoconductive properties of plasmonic nanostructures and can find many uses for photodetection and photovoltaic applications.

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Multipole analysis of light scattering by arbitrary-shaped nanoparticles on a plane surface

Cited by 144 publications

References 45 publications

Magnetic field concentration with coaxial silicon nanocylinders in the optical spectral range

Magnetic field concentration with coaxial silicon nanocylinders in the optical spectral range

Self-assembled antireflection coatings for light trapping based on SiGe random metasurfaces

Giant Photogalvanic Effect in Noncentrosymmetric Plasmonic Nanoparticles

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