Enhanced absorption in all-dielectric metasurfaces due to magnetic dipole excitation

Pavel D. Terekhov, Kseniia V. Baryshnikova, Yakov Greenberg, Yuan Hsing Fu, Andrey B. Evlyukhin, Alexander S. Shalin, Alina Karabchevsky

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

All-dielectric nanophotonics lies at a forefront of nanoscience and technology as it allows to control light at the nanoscale using its electric and magnetic components. Bulk silicon does not experience any magnetic response, nevertheless, we demonstrate that the metasurface made of silicon parallelepipeds allows to excite the magnetic dipole moment leading to the broadening and enhancement of the absorption. Our investigations are underpinned by the numerical predictions and the experimental verifications. Also surprisingly we found that the resonant electric quadrupole moment leads to the enhancement of reflection. Our results can be applied for a development of absorption based devices from miniature dielectric absorbers, filters to solar cells and energy harvesting devices.

Original languageEnglish
Article number3438
JournalScientific Reports
Volume9
Issue number1
DOIs
StatePublished - 1 Dec 2019

ASJC Scopus subject areas

  • General

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