[Th-P] Nanophotonics

[Th-P-75] Robust Broadband Infrared Unidirectional Absorption Enabled by a Non-Hermitian Multilayer

〇Wakana kubo¹, Ayaha Yamamoto¹ (1. Tokyo Univ. Agri. Technol. (Japan))

We demonstrate a non-Hermitian multilayer that achieves broadband infrared unidirectional absorption matched to 373 K blackbody radiation. Precise thickness design with low- and high-loss materials yields near-unity forward absorption and strongly suppressed backward absorption (< 30%).