Abstract

We have investigated theoretically and experimentally the effect of plasmonic and all-dielectric metasurfaces on the magneto-optical response of the 2D periodic structure. For this purpose, we fabricate polydimethylsiloxane-based 2D microstructures. So, we coated them with a gold layer and a ${\rm{Ti}}{{\rm{O}}_2}$ dielectric layer as plasmonic and dielectric metasurfaces, respectively, CoFeB as the prominent magneto-optical thin films. We record the spectral magneto-optical longitudinal Kerr effect under 40 mT, and the spectrometer’s response in all visible regions. Our results show that the electric and magnetic dipole moments enhance the magneto-optical response by factors of one and two in two closer channels in 650 and 660 nm in an all-dielectric structure, respectively. The plasmonic hot spot-based magneto-optical enhancement is also confirmed in two other media with an enhancement factor of two.

© 2023 Optica Publishing Group

Optically induced antiferromagnetic order in dielectric metasurfaces with complex supercells

Aso Rahimzadegan, Sergey Lepeshov, Wenjia Zhou, Duk-Yong Choi, Jürgen Sautter, Dennis Arslan, Chengjun Zou, Stefan Fasold, Carsten Rockstuhl, Thomas Pertsch, Yuri Kivshar, and Isabelle Staude
J. Opt. Soc. Am. B 40(5) 994-998 (2023)

Tunable plasmonic thin magneto-optical wave plate

A. V. Baryshev and A. M. Merzlikin
J. Opt. Soc. Am. B 33(7) 1399-1405 (2016)

Tuning the magnetic toroidal dipole response in dielectric metasurfaces

Xinfeng Wang, Deliang Chen, Wenbin Ma, Shaojun You, Mimi Zhou, Liyang Wang, Qing Zhang, Shengyun Luo, and Chaobiao Zhou
J. Opt. Soc. Am. B 40(3) 560-566 (2023)

All-dielectric metasurface with multiple Fano resonances supporting high-performance refractive index sensing

Chen Zhao, Yiping Huo, Tong Liu, Zuxiong Liao, Congmu Xu, and Tao Zhang
J. Opt. Soc. Am. B 41(1) 36-45 (2024)

Optimizing the optical and magneto-optical response of all-dielectric metasurfaces with tilted side walls

Siyuan Gao, Yasutomo Ota, Feng Tian, Tianji Liu, and Satoshi Iwamoto
Opt. Express 31(9) 13672-13682 (2023)