Plasmonic resonance mode extraction based on the T-matrix method

Khajeahsani, Mohammad Sadegh; Shahmansouri, Afsaneh; Armand, Mohammad Javad; Rashidian, Bizhan

doi:10.1364/josab.32.002333

Cited by 9 publications

(3 citation statements)

References 43 publications

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“…Several methods have been developed in order to obtain the electromagnetic resonances of a nanostructure. These methods can be separated into two main categories: those developed in the quasi-static [13][14][15][16][17][18][19][20][21] and dipolar [22] approximations and those using a full wave analysis method [23][24][25][26]. Each category includes several formulations, such as volume [27] and surface integral equations methods [23], direct application of the Green's tensor method [22,28], and direct expression of the electrostatic interaction between surface charges [14,[16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Mode analysis of second-harmonic generation in plasmonic nanostructures

2016

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Using a surface integral equation approach based on the tangential Poggio-Miller-Chang-Harrington-Wu-Tsai formulation, we present a full wave analysis of the resonant modes of 3D plasmonic nanostructures. This method, combined with the evaluation of second-harmonic generation, is then used to obtain a better understanding of their nonlinear response. The second-harmonic generation associated with the fundamental dipolar modes of three distinct nanostructures (gold nanosphere, nanorod, and coupled nanoparticles) is computed in the same formalism and compared with the other computed modes, revealing the physical nature of the second-harmonic modes. The proposed approach provides a direct relationship between the fundamental and second-harmonic modes in complex plasmonic systems and paves the way for an optimal design of double resonant nanostructures with efficient nonlinear conversion. In particular, we show that the efficiency of second-harmonic generation can be dramatically increased when the modes with the appropriate symmetry are matched with the second-harmonic frequency.

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Section: Introductionmentioning

confidence: 99%

Mode analysis of second-harmonic generation in plasmonic nanostructures

2016

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“…Also, quasinormal modes recently became quite popular [30][31][32]. A spectral decomposition of the T matrix can be done as well [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Quantifying Fano properties in self-assembled metamaterials

et al. 2019

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Fano resonances in metamaterials can be explained by the coupling between different modes sustained by the meta-atom. While the associated spectral features are usually quite easy to identify for top-down metamaterials, thanks to the deterministic arrangement of the meta-atom relative to the illumination, the identification of spectral features due to Fano resonances is much more challenging for bottom-up metamaterials. There, the response is spurred by the random arrangement of the meta-atoms relative to the illumination. To improve the situation, we introduce a quantity that measures the nonorthogonality of the modes sustained by the meta-atom. The measure allows us to disclose whether specific details in the spectral response emerge from Fano features or whether they are only due to the incoherent superposition of different modes. We strengthen our argumentation while discussing the multipolar decomposition of the different modes that contribute to the Fano features for a representative meta-atom.

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“…T-matrix calculations for particles with one or multiple (eccentric) inclusions [33-35,49,96,141,142,194,195,215].2.21. T-matrix calculations of optical resonances in non-spherical particles and multi-particle clusters[15,46,48,51,95,100,155,160,167,172,181,211].2.22. T-matrix calculations of optical and photophoretic forces and torques on small particles [26,43,53,104,131,136,139,144,148,149,152,157,177, 201,213].…”

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confidence: 99%

Comprehensive thematic T-matrix reference database: A 2014–2015 update

Mishchenko

Zakharova²,

Khlebtsov

et al. 2016

Journal of Quantitative Spectroscopy and Radiative Transfer

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The T-matrix method is one of the most versatile and efficient direct computer solvers of the macroscopic Maxwell equations and is widely used for the computation of electromagnetic scattering by single and composite particles, discrete random media, and particles in the vicinity of an interface separating two half-spaces with different refractive indices. This paper is the seventh update to the comprehensive thematic database of peerreviewed T-matrix publications initiated by us in 2004 and includes relevant publications that have appeared since 2013. It also lists a number of earlier publications overlooked previously.

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Plasmonic resonance mode extraction based on the T-matrix method

Cited by 9 publications

References 43 publications

Mode analysis of second-harmonic generation in plasmonic nanostructures

Mode analysis of second-harmonic generation in plasmonic nanostructures

Quantifying Fano properties in self-assembled metamaterials

Comprehensive thematic T-matrix reference database: A 2014–2015 update

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