Orthogonally polarized terahertz wave imaging with real-time capability for food inspection
Orthogonally polarized terahertz wave imaging with real-time capability for food inspection
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DOI：
10.1109/apmc.2015.7413204
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
X. Yu;M. Endo;T. Ishibashi;M. Shimizu;S. Kusanagi;T. Nozokido;J. Bae
中科院分区：
文献类型：
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作者：
X. Yu;M. Endo;T. Ishibashi;M. Shimizu;S. Kusanagi;T. Nozokido;J. Bae
开发了一种工作在0.3太赫兹的太赫兹成像系统，用于检测以高于20米/分钟的速度输送的食物中的异物。该成像系统具有两个肖特基势垒二极管阵列，分别独立地和同时地检测水平和垂直极化太赫兹波。实验表明，该成像系统可以成功地获得衍射极限分辨率为1mm的太赫兹图像。研究还表明，用垂直偏振波对两幅图像进行加减可以有效地增强太赫兹图像的对比度。
A terahertz imaging system operating at 0.3 THz has been developed for the purpose of detecting foreign substances in foods conveyed at a velocity of higher than 20 m/min. The imaging system has two Schottky barrier diode arrays which detect horizontally and vertically polarized terahertz waves independently and simultaneously. Experiments have shown that the imaging system can successfully obtain THz images with a diffraction limited resolution of 1 mm. It has also been shown that addition or subtraction of two images taken with perpendicularly polarized waves is effective to enhance the contrast of terahertz images.