[20p-A34-1~12] 3.8 Terahertz technologies

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[20p-A34-3] Exceptional point in a Babinet complementary metal mesh structure

〇(M1)Masahiro Ueda¹, Takuto Matsuki¹, Soto Wada¹, Takumi Oie¹, Yuta Watanabe¹, Yoshinori Shohmitsu³, Toyoaki Suzuki², Takehiko Wada⁴, Toshihiro Nakaoka¹ (1.Sophia Univ., 2.ISAS/JAXA, 3.QUP/KEK, 4.NAOJ)

Keywords:

Bandpass filter,Metal mesh,Photonic band structure

We have investigated a Babinet complementary metal mesh filter as a robust bandpass filter in the terahertz band. In the present study, electromagnetic simulations show that the interaction between the Fabry-Perot resonant mode and a plasmonic mode localized in the metal mesh changes from crossing to anticrossing via an exceptional point. The exceptional point is a degeneracy specific to non-Hermitian systems, and we report that this structure can be a platform for non-Hermitian optics.