Multipole coupling mechanisms of light propagation control and trapping by dielectric nanoparticle structures

Andrey B. Evlyukhin

doi:10.1117/12.3016150

11 June 2024 Multipole coupling mechanisms of light propagation control and trapping by dielectric nanoparticle structures

Andrey B. Evlyukhin

Author Affiliations +

Proceedings Volume PC12990, Metamaterials XIV; PC129900W (2024) https://doi.org/10.1117/12.3016150
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Multipole mechanisms of light propagation control and trapping effect in structures composed of dielectric nanoparticle supporting the electric and magnetic optical resonances are discussed. First, a concept of multipole coupling is introduced for explanation what type multipoles and why can be coupled in periodic nanoparticle structures (metasurfaces). Then the implementation of such coupling for light trapping, which does not require any special irradiation conditions for the incident light or geometrical distortion of the symmetry of the periodic structures, is presented. Realization of accidental quasi bound states in the continuum (BICs) associated with multipole coupling is also discussed. Next, magnetoelectric multipole coupling effects in metasurfaces and separate structures composed of particles with bianisotropic electromagnetic response are demonstrated. The presented mechanisms are of a general nature and can be implemented in many structures, which opens up new application prospects.

Conference Presentation

Citation Download Citation

Andrey B. Evlyukhin "Multipole coupling mechanisms of light propagation control and trapping by dielectric nanoparticle structures", Proc. SPIE PC12990, Metamaterials XIV, PC129900W (11 June 2024); https://doi.org/10.1117/12.3016150

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