[15p-WL2_201-1~10] 3.10 Photonic structures and phenomena

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)

[15p-WL2_201-2] 2D and 3D chirality in non-Hermitian photonic crystals with symmetry control

〇Tooi Suzuki^1,2, Satoshi Suzuki^1,2, Shutaro Otsuka^1,2, Takahiro Uemura^1,2, Yuto Moritake⁴, Taiki Yoda¹, Masaaki Ono^2,3, Eiichi Kuramochi^2,3, Masaya Notomi^1,2,3 (1.Science Tokyo, 2.NTT BRL, 3.NTT Nanophotonics Center, 4.IIS, University of Tokyo)

Keywords:

Photonic crystal,Chirality,Symmetry control

By perturbatively breaking the symmetry of a photonic crystal, we demonstrate that the peaks of two- and three-dimensional chirality (CPs) move within momentum space while maintaining a fixed relationship. Furthermore, using an effective Hamiltonian derived from symmetry considerations, we show that the band structure of the photonic crystal and the distribution of two- and three-dimensional chirality on the isofrequency surface can be reproduced, which is verified by both experiments and numerical simulations.