超短强激光在大气中传输形成的等离子体细丝由于能够辐射出太赫兹信号而成为一种新的太赫兹辐射源,这对实现远距离太赫兹的远程传感具有重要的意义,在太赫兹辐射产生技术领域备受关注。详细综述了超短强激光大气等离子体细丝中产生太赫兹辐射现象的研究进展和现状,并着重对等离子体细丝产生太赫兹辐射的形成机理进行了概述和初步探讨,最后对其应用前景进行了展望,进而提出目前尚未解决的问题。
The plasma filament induced by ultra-short intense laser pulses propagating in atmosphere can generate terahertz radiation,which has been a new terahertz radiation source.The new terahertz radiation source has been attracting enormous research interest.Firstly,the evolution and present situation of Terahertz radiation from ultra-short intense laser-induced atmosphere plasma filaments are summarized in detail;especially,the forming mechanisms of Terahertz radiation from femtosecond laser-induced atmosphere plasma filaments are analyzed and discussed detailly.In addition,the prospects of the new terahertz radiation source in application are also discussed,and the unsolved problems in future are given in this paper.