[Tu-A2-C] Photonic crystal and metasurface

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[Tu-A2-C-01] Photonic-Crystal Beam Converters Enabled by Non-Hermitian and Hermitian Coupling Control

〇Ryoji Manabe¹, Tomoki Kanesaka¹, Takuya Inoue¹, Masahiro Yoshida¹, Kenji Ishizaki¹, Susumu Noda^2,1 (1. Kyoto University (Japan), 2. Kyoto University Institute for Advanced Study (Japan))

We demonstrate a photonic-crystal beam converter based on the control of Hermitian and non-Hermitian couplings. A normally incident Gaussian beam from free space is efficiently coupled into in-plane propagating waves, and is subsequently emitted outwards with a modified far-field radiation pattern.