RADIATION-PATTERNS FROM LENS-COUPLED TERAHERTZ ANTENNAS
RADIATION-PATTERNS FROM LENS-COUPLED TERAHERTZ ANTENNAS
复制标题
DOI：
10.1364/ol.20.000807
复制
发表时间：
1995-04-15
期刊：
影响因子：
3.6
通讯作者：
KEIDING, SR
中科院分区：
文献类型：
--
作者：
JEPSEN, PU;KEIDING, SR
我们报告了对配备截头球形硅透镜的太赫兹天线系统发射的辐射角分布的研究。该图案是通过广角干涉原理和惠更斯-菲涅耳衍射理论计算的。辐射方向图的实验测定是通过空间分辨太赫兹时域光谱进行的。理论与实验得到了很好的吻合，我们发现太赫兹光束可以用从等于透镜直径的圆形孔径发射的高斯光束来表示。
We report on investigations of the angular distribution of the radiation emitted from a terahertz antenna system equipped with a truncated spherical silicon lens. The pattern is calculated by wide-angle interference principles and Huygens-Fresnel diffraction theory. Experimental determination of the radiation pattern is performed by spatially resolved terahertz time-domain spectroscopy. Good agreement between theory and experiment is obtained, and we find that the terahertz beam can be represented by a Gaussian beam emitted from a circular aperture equal to the diameter of the lens.