研究了一种基于偏振特征的连续太赫兹(THz)波成像检测技术。实验采用相干公司SIFIR-50 连续THz 波激光器作为光源，搭建THz实时偏振成像系统。根据目标透射光偏振特性的差异，利用日本NEC 公司IRV-T0831C 型非制冷测微辐射热THz相机，获取金属结构、货币水印和隐藏物体三类典型目标的THz波透射图像，计算目标的斯托克斯参量图像和偏振图像，分析了THz波偏振成像的检测特性。实验表明，THz偏振成像技术既发挥了THz波无损成像的优势，又能有效提高目标的识别效率，使不同目标物体的成像差异最大化。

Polarization imaging detection based on continuous terahertz (THz) wave is studied. THz real-time polarization imaging system,which using the SIFIR-50 THz laser as radiation source and a NEC IRV-T0831C THz imager as array detector, is demonstrated. According to the polarization characteristics from transmitted light of the target, THz transmission images for three kinds of typical targets—metallic structures, watermark of cashes and hidden objects—are obtained using the uncooled microbolometer THz camera. The Stokes vector images and polarization images are calculated and analyzed. Experimental results show that THz polarization imaging not only have the advantage of THz noninvasive imaging, but can also improve the performance of target recognition effectively and maximize the differences between the images of different target objects.