[19a-B203-1~9] 3.8 Terahertz technologies (formerly 3.9)

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[19a-B203-4] Improvement of mid-infrared transmittance by Au film deposition on top of a CdZnTe moth-eye structure

〇(M1)Ryota Kakihara¹, Taiki Eda¹, Yoshinori Shohmitsu³, Toshihiro Nakaoka¹, Takehiko Wada⁴, Toyoaki Suzuki², Takao Nakagawa² (1.Sophia Univ., 2.ISAS/JAXA, 3.KEK QUP, 4.NAOJ)

Keywords:

moth-eye structure,CdZnTe,meta-material

The mid-infrared region (5-30 μm, 10-60 THz) corresponds to the fundamental vibration spectrum of molecules and has been widely studied for gas sensing application and infrared astronomy to understandthe formation and evolution of solid particles in space. We have fabricated a moth-eye structure on CdZnTe, which exhibits high transmittance in the 10-18 μm wavelength range. We have demonstrated the anti-reflection effect of the moth-eye structure by FT-IR measurement and 3D electromagnetic simulation. In this study, we show an enhancement in transmittance by depositing an Au film on top of a CdZnTe moth-eye structure through a 3D electromagnetic simulation.