Narrowband perfect terahertz absorber based on polar-dielectrics metasurface
Zhao Meng-Meng1, Fu Shu-Fang1, †, Zhou Sheng1, 2, ‡, Song Yu-Ling1, Zhang Qiang1, Yin Yong-Qi1, Zhao Yu-Tian1, Liang Hong3, Wang Xuan-Zhang1
       

Absorption spectra for angular dependence (α): (a) absorption of PA, and (b) the electric field patterns at the top surface of PA with α = 20°, 40°, 60° and 80°.