太赫兹波谱与成像技术

太赫兹波谱与成像是太赫兹科学与技术的重要内容，在生物、物理、化学、安检、航空航天等领域有重要的应用前景，是近年来的研究热点。首先简单介绍了太赫兹时域光谱、时间分辨光谱和超连续谱等波谱技术，并列举了相关波谱技术对爆炸物识别和对半导体材料超快载流子动力学的研究结果。讨论了时域扫描成像、实时焦平面成像、连续波成像和被动成像等太赫兹成像技术。相应地分别给出了利用上述技术对葵花籽、玩具手枪、航天泡沫和人体的成像研究结果。

Terahertz spectroscopy and imaging

Terahertz (THz) spectroscopy and imaging, as the focus of THz science and technology, can be applied in many fields, such as biology, physics, chemistry, safety check, aerospace, etc. And now they are becoming international attractive field especially in recent years. Firstly, the THz time domain spectroscopy, time resolved THz spectroscopy and THz supercontinuum technology were discussed briefly. Results for characteristic identification of explosives and research on dynamics of ultra-fast charge carrier by using different THz spectroscopy were presented. Meanwhile, the THz time domain scan imaging, real time focal plane imaging, continuous wave imaging, and passive THz imaging technologies were introduced respectively. In application study, research on sunflower seeds by using THz time domain scan imaging technology, plastic cap gun covered by canvas using real time focal plane imaging technology, aerospace foam and pistol model by using continuous wave imaging technology, human body by using passive THz imaging technology were all presented correspondingly.