Abstract

The nonlinear optical properties of the high-index nanoparticles are boosted at the anapole state. Researchers intensively study this phenomenon as being promising for various applications. In this Letter, the nonlinear optical Kerr effect of disordered and square lattice metasurfaces of GaP nanodisks is investigated as a function of the disk size in the vicinity of the anapole state at the wavelength of 532 nm. When the sizes of the nanodisks are close to the anapole state, the effective second-order refractive index of the metasurface increases exponentially. On approaching the anapole state, the sign of the effective second-order refractive index is inverted. The absolute value of the effective nonlinear Kerr coefficient of the square lattice metasurface is higher than that of the disordered array of nanodisks. The absolute value of the effective second-order refractive index in proximity to the anapole state is an order of magnitude higher than that at non-anapole resonances of the disordered metasurfaces consisting of the nanodisks or spheres.

© 2020 Optical Society of America

Optical Kerr nonlinearity of dielectric nanohole array metasurface in proximity to anapole state

Andrey V. Panov
Opt. Lett. 47(11) 2866-2869 (2022)

High Q-factor with the excitation of anapole modes in dielectric split nanodisk arrays

Shao-Ding Liu, Zhi-Xing Wang, Wen-Jie Wang, Jing-Dong Chen, and Zhi-Hui Chen
Opt. Express 25(19) 22375-22387 (2017)

Generalized hybrid anapole modes in all-dielectric ellipsoid particles [Invited]

Anar K. Ospanova, Alexey Basharin, Andrey E. Miroshnichenko, and Boris Luk’yanchuk
Opt. Mater. Express 11(1) 23-34 (2021)

Enhancing Faraday and Kerr rotations based on the toroidal dipole mode in an all-dielectric magneto-optical metasurface

Qin Tang, Dandan Zhang, Tingting Liu, Wenxing Liu, Qinghua Liao, Jizhou He, Shuyuan Xiao, and Tianbao Yu
Opt. Lett. 48(13) 3451-3454 (2023)

Enhancing third-harmonic generation by mirror-induced electric quadrupole resonance in a metal–dielectric nanostructure

Jin Yao, Yan Yin, Longfang Ye, Guoxiong Cai, and Qing Huo Liu
Opt. Lett. 45(20) 5864-5867 (2020)