Development of terahertz striplines for high sensitivity and local sensing

我们研究了利用太赫兹波进行高灵敏度和局部传感的带状线结构。在高灵敏度传感方面，我们证明了微带和共面线滤波器都是同样有用的，并且通过采用分线差分检测方案，可以将时域光谱的灵敏度提高约一个数量级。在局部传感方面，我们表明，利用集成在条纹上的金属探针，光谱传感成为可能，空间分辨率为1/100波长。

We investigated the stripline structures for high sensitivity and local sensing of matter using terahertz waves. On the high sensitivity sensing, we demonstrated that both the microstrip and coplanar line filters are equally useful and that, by utilizing a differential detection scheme with split lines, the sensitivity of time domain spectroscopy can be improved by about one order of magnitude. On the local sensing, we showed that the spectroscopic sensing becomes possible with a spatial resolution of 1/100 wavelength using a metal probe integrated on the striplies.