太赫兹新型探测器的研究进展及应用

太赫兹波由于其独特的光学和电学性质,在物理学、生物学、公共安全检查、局域通信、信息安全、环境监测、无损检测和国防科技等民用或军事领域都有着广阔的应用前景。太赫兹探测器作为太赫兹领域的核心器件,在太赫兹系统中扮演着重要角色。因此太赫兹探测器的性能,决定了太赫兹系统的应用市场。近年来,太赫兹探测器的发展已取得突破性的成果,但是太赫兹探测器还存在着一些普遍的问题,制冷的太赫兹探测器虽然有响应速率快和噪声等效功率低等优点,但是其紧凑性不好,并且成本较高。室温可工作的太赫兹探测器虽然不需要制冷环境,但是噪声等效功率偏大,灵敏度也不高。该综述从太赫兹探测器的制备材料和器件形式等方面,阐述了太赫兹探测器的发展现状及其应用领域。

The research progress and application of novel terahertz detectors

Terahertz waves have many unique electrical and optical properties, which have significant applications in both civil and military fields, such as physics, biology, public safety inspection, local area communication, information security, environmental monitoring, non-destructive testing and defense technology etc. Terahertz detector is one of the core components in a terahertz system. Therefore, its application is usually determined by the characteristic and performance of the detector. In recent years, there are some major breakthroughs in the development of terahertz detectors. However, there are still technology challenges that limit the application of such device. For example, room temperature terahertz detectors exhibited a large noise equivalent power and low sensitivity. This is in contrast to cooled terahertz detectors, which demonstrated high response rate and low noise equivalent power, but they cannot be miniaturized and are costly. This paper provides a summary and discussion on the recent development and application of terahertz detectors from the aspect of material preparation and device configuration.