Directional terahertz radiation through groove-assisted hole array
Directional terahertz radiation through groove-assisted hole array
复制标题
通过凹槽辅助孔阵列定向太赫兹辐射
DOI:
10.1007/s00340-008-3141-0
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发表时间:
2008-08
影响因子:
2.1
通讯作者:
Du, C.
中科院分区:
文献类型:
--
作者:
Luo, X.;Cui, J.;Gan, D.;Shi, H.;Ma, J.;Liu, Y.;Du, C.
The authors theoretically demonstrate the terahertz beam shaping with metallic subwavelength holes array surrounded by concentric periodic grooves. High transmission and directional radiation can be obtained simultaneously for the resonant excitation of the surface wave in the combined structure. Finite-difference time-domain simulation results shows that the transmission mainly depends on the lattice constant of hole array and the features of incident surface around it, while the far-field angle distribution is dominated by the details of the output surface. This compact beam shaping structure is hoped to serve as a basic device for future terahertz systems.
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