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Intense terahertz antenna array with interdigital electrodes

机译:带有叉指电极的强太赫兹天线阵列

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摘要

In this work a powerful terahertz antenna array with interdigital electrodes is fabricated, and the performance of one antenna unit is compared with a conventional resonant dipole antenna. The antenna unit has a better capacity of generating THz wave compared with a conventional resonant dipole antenna at the same bias electrical field and the same laser energy. However only 23 % of THz wave transmitted through the ceramic substrate of antenna array, if there is a hole drilled through ceramic substrate to release the THz wave, the THz amplitude of entire interdigital antenna array with 8 antenna units can be more than 10 times larger than that of resonant dipole antenna. To get this result, the pump beam is focused into a linear beam by a cylindrical lens to trigger the antenna array, and the linear THz wave is focused by a polyethylene lens before it reaches ZnTe crystal.
机译:在这项工作中,制造了带有叉指电极的功能强大的太赫兹天线阵列,并将一个天线单元的性能与常规谐振偶极天线进行了比较。在相同的偏置电场和相同的激光能量下,与传统的谐振偶极天线相比,该天线单元具有更好的产生THz波的能力。但是,只有23%的THz波通过天线阵列的陶瓷基板传输,如果在陶瓷基板上钻一个孔以释放THz波,则带有8个天线单元的整个叉指天线阵列的THz幅度可能会大10倍以上比谐振偶极子天线要大。为了获得此结果,泵浦光束被圆柱透镜聚焦成线性束以触发天线阵列,线性THz波在到达ZnTe晶体之前被聚乙烯透镜聚焦。

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