太赫兹射线成像的进展概况  

Review of the Progress of T-Ray Imaging

作　　者：张蕾[1] 徐新龙[2] 汪力[2] 李福利[1] 

机构地区：[1]首都师范大学物理系,北京100037 [2]中国科学院物理研究所光物理开放实验室,北京100080

出　　处：《首都师范大学学报（自然科学版）》2005年第1期38-42,共5页Journal of Capital Normal University：Natural Science Edition

基　　金：国家自然科学基金 (10 1740 48号 )

摘　　要：太赫兹辐射介于微波和红外之间 .本文回顾了太赫兹射线成像的进展情况 .与微波、X射线、核磁共振NMR(nuclearmagneticresonance)成像相比 ,太赫兹成像不仅能给出物体的密度信息 ,而且能给出频率域的信息 ,以及在光频、微波和X射线范围内所不能给出的材料的转动、振动信息 .太赫兹射线与其他频段的电磁波相比 ,它能量低 ,不会造成对生物样品的电离损伤 ,而且太赫兹射线很容易穿过介电材料 ,因而可以用于产品的安全监测、纳米材料的无损探伤 .因此太赫兹成像技术在生物学、工业安全监测等方面有可能带来新的关键性的突破 .In this paper,We present an overview of recent progress of T-ray imaging.Compared with microwave,X-ray imaging and NMR(nuclear magnetic resonance),T-ray imaging can give us not only the density picture but also the phase information within the frequency range.The unique rotational,vibrational and translational responses of materials(molecular,radicals and ions)within the THz range provide information that is generally absent in optical,X-ray and NMR images.The important characteristic of T-ray is that it has potential to detect the nature of low energy processes in physics,chemistry and biomedicine without the ionization.T-rays can also easily penetrate and image inside most dielectric materials and nano materials,which make it a useful and complementary imaging source.We also believe that the “key”application of terahertz technology is for T-ray imaging bio-body.

关 键 词：太赫兹 能带 电离 转动 物体 成像 NMR 微波 射线 监测 

分 类 号：N09[自然科学总论—科学技术哲学] O451[理学—无线电物理]