介绍了共焦扫描显微成像技术的基本原理，基于CO2抽运连续太赫兹(THz)激光器SIFIR-50搭建了透射型连续THz共焦扫描成像系统，对THz共焦扫描成像技术进行了初步的实验研究。实验结果表明将共焦扫描显微成像技术与THz成像技术相结合，能够有效提高THz成像系统的横向分辨特性，显示了THz共焦扫描成像技术具有广阔的应用及发展前景。

The principle of confocal scanning microscope is introduced. A THz confocal imaging system is presented based on a CO2 pumped continuous-wave THz laser SIFIR-50, and preliminary study on THz confocal imaging is carried out. The experimental result shows that the combination of confocal microscope and THz imaging can improve the lateral resolution of THz imaging system effectively, which illustrates the exciting potential applications for this emerging technique.