Enhanced magneto-optical intensity effect in a helicity-preserving all-dielectric metasurface at Mie resonances and the anapole state

@misc{zorina2026enhanced,
  title = {{Enhanced magneto-optical intensity effect in a helicity-preserving all-dielectric metasurface at Mie resonances and the anapole state}},
  author = {P. V. Zorina and D. O. Ignatyeva and A. E. Bezmenova and A. N. Kalish and S. Xia and L. Bi and V. I. Belotelov},
  howpublished = {arXiv},
  year = {2026},
  month = may,
  doi = {10.48550/arxiv.2605.23730},
  eprint = {2605.23730},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.23730},
}

TY  - UNPB
TI  - Enhanced magneto-optical intensity effect in a helicity-preserving all-dielectric metasurface at Mie resonances and the anapole state
AU  - P. V. Zorina
AU  - D. O. Ignatyeva
AU  - A. E. Bezmenova
AU  - A. N. Kalish
AU  - S. Xia
AU  - L. Bi
AU  - V. I. Belotelov
PY  - 2026
DA  - 2026/05/25
PB  - arXiv
DO  - 10.48550/arxiv.2605.23730
UR  - https://arxiv.org/abs/2605.23730
AB  - Nanophotonic structures provide an efficient route to enhancing magneto-optical effects by concentrating electromagnetic fields at subwavelength scales. In this work, we propose and experimentally demonstrate a helicity-preserving all-dielectric metasurface for enhancing magnetization-induced transmission modulation under circularly polarized excitation. The optical response of the structure is governed by the Mie resonances of silicon nanodisks and by a spectral feature associated with the anapole state. In the spectral regions of the Mie resonances, the metasurface exhibits a pronounced enhancement of the magneto-optical intensity response relative to a bare magnetic film of the same thickness, with the normalized magneto-optical intensity effect increased by a factor of about 2-3. A strong response is also observed in the spectral region associated with the anapole state, manifested as a local transmission maximum. In this regime, the normalized magneto-optical intensity effect exceeds that of the bare magnetic film by about 30%, while the metasurface transmission remains as high as around 80%. The enhanced response in this spectral region is preserved over a broad range of incidence angles. These results demonstrate that all-dielectric metasurfaces combining Mie resonances with the spectral feature associated with the anapole state provide an efficient platform for magneto-optical intensity modulation of circularly polarized light at high transmission.
ER  -