Zhang Liangliang, Zhong Hua, Deng Chao, Zhang Cunlin, Zhao Yuejin
Beijing Key Lab for Terahertz Spectroscopy and Imaging, Capital Normal University, No 105 XiSanHuan BeiLu, Beijing 100048, China.
Opt Express. 2009 Oct 26;17(22):20266-71. doi: 10.1364/OE.17.020266.
We present a terahertz wave polarization analysis method to extract the polarization rotation angle with respect to the horizontal direction. A quartz crystal is used as the polarization analyzer with the optical axis of the crystal fixed at 45 degrees orientation. The polarization angle of the terahertz waves generated from two-color laser-induced gas plasma is extracted by measuring the transmitted ordinary and extraordinary beams. This work demonstrates that low-absorbance birefringent materials are good candidates for terahertz polarization analysis.
我们提出了一种太赫兹波偏振分析方法，用于提取相对于水平方向的偏振旋转角度。使用石英晶体作为偏振分析仪，晶体的光轴固定在45度方向。通过测量透射的寻常光和非寻常光，提取双色激光诱导气体等离子体产生的太赫兹波的偏振角。这项工作表明，低吸收率双折射材料是太赫兹偏振分析的良好候选材料。
