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Computation of scat...
Computation of scattering resonances in absorptive and dispersive media with applications to metal-dielectric nano-structures
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- Araujo-Cabarcas, Juan Carlos, 1981- (författare)
- Umeå universitet,Institutionen för matematik och matematisk statistik,Umeå University, Sweden
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- Campos, Carmen (författare)
- Universitat Politècnica de València, Spain
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- Engström, Christian (författare)
- Linnéuniversitetet,Institutionen för matematik (MA)
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- Roman, Jose E. (författare)
- Universitat Politècnica de València, Spain
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(creator_code:org_t)
- Elsevier, 2020
- 2020
- Engelska.
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Ingår i: Journal of Computational Physics. - : Elsevier. - 0021-9991 .- 1090-2716. ; 407
- Relaterad länk:
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https://arxiv.org/ab...
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https://riunet.upv.e...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In this paper we consider scattering resonance computations in optics when the resonators consist of frequency dependent and lossy materials, such as metals at optical frequencies. The proposed computational approach combines a novel hp-FEM strategy, based on dispersion analysis for complex frequencies, with a fast implementation of the nonlinear eigenvalue solver NLEIGS. Numerical computations illustrate that the pre-asymptotic phase is significantly reduced compared to standard uniform h and p strategies. Moreover, the efficiency grows with the refractive index contrast, which makes the new strategy highly attractive for metal-dielectric structures. The hp-refinement strategy together with the efficient parallel code result in highly accurate approximations and short runtimes on multi processor platforms.
Ämnesord
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
Nyckelord
- Plasmon resonance
- Resonance modes
- Nonlinear eigenvalue problems
- Helmholtz problem
- PML
- Dispersion analysis
- leaky modes
- resonant states
- quasimodes
- quasi-normal modes
- Tillämpad matematik
- Matematik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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