Presentation Information

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[7a-N106-3]Development of an Ultrabroadband Near-Perfect Absorber Covering the THz to DUV Spectral Range Based on Carbon Coated Moth-Eye Structure

〇(D)Yuki Hakamada¹, Maria Cojocari², Mizuho Matoba¹, Shotaro Kawano¹, Haruyuki Sakurai¹, Kuniaki Konishi¹, Daniil Pashnev³, Surya Revanth Ayyagari³, Vytautas Janonis³, Andrzej Urbanowicz³, Saulius Tumenas³, Justinas Jorudas³, Irmantas Kasalynas³, Janna Pennanen², Adigun Deborah Amos², Aleksandr Saushin², Georgy Fedorov², Yuri Svirko², Polina Kuzhir² (1.UTokyo, 2.UEF, 3.FTMC)

Keywords:

Absorber,Carbon thin films

To realize a broadband and highly efficient electromagnetic wave absorber, we developed a structure by coating a 100 nm-thick pyrolytic carbon (PyC) film onto a periodic pyramid array with a period of 67 µm and a height of 240 µm. Spectral measurements demonstrated that the fabricated absorber achieved over 98% absorption across a wide frequency range from 1 to 1200 THz. To investigate the origin of this exceptional absorption performance, numerical simulations were conducted. This structure shows great potential for applications in communication technologies, radio astronomy, and thermal radiation sources.

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