Ying Huang, Atsuki Kosugi, Yuya Naito, Yuma Takida, Hiroaki Minamide, Kazuhiro
Hane and Yoshiaki Kanamori,
"Improvement in THz light extraction efficiencies with antireflection
subwavelength gratings on a silicon prism,"
Japanese Journal of Applied Physics, vol. 60, no. SC, Article number: SCCL04
(2021).