Polarization-controlled dual resonant lattice Kerker effects

Xiong, Lei; Zhao, Xueqian; Du, Xiang; Chen, Shuai; Lu, Yuanfu; Ding, Hongwei; Li, Guangyuan

doi:10.1007/s12274-022-4988-9

Cited by 5 publications

(1 citation statement)

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“…The different symmetry of the radiation patterns of these modes ensures that their interference results in the perfect absorption of all of the incident radiation. Although similar approaches have been explored in the past for the achievement of a generalized Kerker effect, [ 47,73–75 ] our results are the first to theoretically demonstrate their use to achieve perfect absorption. Furthermore, the use of two lattice resonances provides very high quality factors, which makes our approach stand out above other procedures to achieve perfect absorption.…”

Section: Discussionmentioning

confidence: 84%

Perfect Absorption with Independent Electric and Magnetic Lattice Resonances in Metallo‐Dielectric Arrays

Cerdán,

Deop‐Ruano,

Alvarez‐Serrano

et al. 2024

Advanced Optical Materials

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Lattice resonances are collective modes supported by periodic arrays of nanostructures. They originate from the coherent interaction between the localized modes of the individual constituents of the array, which, for systems made of metallic nanostructures, usually correspond to the electric dipole plasmon. Unfortunately, fundamental symmetry reasons preclude a two‐dimensional (2D) arrangement of electric dipoles from absorbing more than half the incident power, thus imposing a strong limitation on the performance of conventional lattice resonances. This work introduces an innovative solution to overcome this constraint, which is based on using an array made of a unit cell containing one metallic and one dielectric nanostructure. Using a rigorous coupled dipole model, it is shown that this system can support two independent lattice resonances associated, respectively, with the electric and magnetic dipole modes of the nanostructures. By adjusting the geometrical characteristics of the array, these two lattice resonances can be meticulously aligned in the spectral domain, leading to the total absorption of the incident power. The results of this work provide clear, yet general, guidelines for the rational design of arrays sustaining lattice resonances capable of producing perfect absorption, thus leveraging the potential of these modes for applications requiring an efficient absorption of light.

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Section: Discussionmentioning

confidence: 84%