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Discrete Light Spectrum of Complex‐Shaped Meta‐atoms
Author(s) -
Silva Solange,
Morgado Tiago A.,
Silveirinha Mário G.
Publication year - 2018
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/2017rs006381
Subject(s) - plasmon , excitation , physics , context (archaeology) , resonator , eigenvalues and eigenvectors , plane wave , limit (mathematics) , dielectric , atom (system on chip) , trapping , nonlinear system , core (optical fiber) , atomic physics , optics , computational physics , quantum mechanics , mathematics , mathematical analysis , computer science , biology , paleontology , ecology , embedded system
Abstract We investigate the potentials of open plasmonic resonators (meta‐atoms) with different shapes in the context of light trapping. Consistent with the theory of Silveirinha (2014), it is found that in some conditions complex‐shaped dielectric cavities may support discrete light states screened by volume plasmons that in the limit of vanishing material loss have an infinite lifetime. The embedded eigenstates can be efficiently pumped with a plane wave excitation when the meta‐atom core has a nonlinear response, such that the trapped light energy is precisely quantized.