中文摘要：

太赫兹由于具有透视性、安全性和波谱分辨能力的特点,近年来得到了较快的发展和应用,成为无损检测的新技术,并被应用于国防、工业、半导体、通信、生物医学、制药、农产品及食品等多个领域。首先介绍了太赫兹波谱技术和成像技术的原理和特点,阐述了太赫兹技术在非金属材料特性和缺陷检测中的应用,并重点分析了近年来太赫兹技术在农产品及食品领域的应用新进展。最后,分析了太赫兹波谱无损检测技术的技术难点及问题,并对其发展趋势进行了展望。

英文摘要：

There has been a series of significant advances and applications in terahertz （THz） technologies which processes perspectivity, safety and spectroscopic fingerprinting ability. The unique properties of THz waves make them become tools for non-destructive detection and application in the fields of defense, industry, semiconductor, communication, biological medicine, pharmaceutical, agro- products, food and etc. Firstly, the principle and feature of THz spectroscopy and imaging techniques were introduced. Then, the non-metallic material characterization and defect inspection in foam and fiber composites were stated. The recent application of THz in agro-products and food was introduced mainly. Finally, the technology difficulties and issues of the THz technologies were analyzed, and their development prospects in the non-destructive detection field were presented.