Engineering novel tunable optical high-Q nanoparticle array filters for a wide range of wavelengths

The interaction of non-monochromatic radiation with arrays comprising plasmonic and dielectric nanoparticles has been studied using the finite-difference time-domain electrodynamics method. It is shown that LiNbO , TiO , GaAs, Si, and Ge all-dielectric nanoparticle arrays can provide a complete sele...

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Veröffentlicht in:Optics express 2020-01, Vol.28 (2), p.1426-1438
Hauptverfasser: Utyushev, A D, Isaev, I L, Gerasimov, V S, Ershov, A E, Zakomirnyi, V I, Rasskazov, I L, Polyutov, S P, Ågren, H, Karpov, S V
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Sprache:eng
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Zusammenfassung:The interaction of non-monochromatic radiation with arrays comprising plasmonic and dielectric nanoparticles has been studied using the finite-difference time-domain electrodynamics method. It is shown that LiNbO , TiO , GaAs, Si, and Ge all-dielectric nanoparticle arrays can provide a complete selective reflection of an incident plane wave within a narrow spectral line of collective lattice resonance with a Q-factor of 10 or larger at various spectral ranges, while plasmonic refractory TiN and chemically stable Au nanoparticle arrays provide high-Q resonances with moderate reflectivity. Arrays with fixed dimensional parameters make it possible to fine-tune the position of a selected resonant spectral line by tilting the array relative to the direction of the incident radiation. These effects provide grounds for engineering novel selective tunable optical high-Q filters in a wide range of wavelengths, from visible to middle-IR.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.28.001426