FOOD INSPECTION SYSTEM USING TERAHERTZ IMAGING

被引：22
|
作者：
Lee, Won-Hui [1 ]
Lee, Wangjoo [1 ]
机构：
[1] Elect & Telecommun Res Inst, Dept Radio Technol Res, Taejon 305700, South Korea
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2014年 / 56卷 / 05期
关键词：
terahertz transmission; imaging svstem; gyrotron; reflecting mirror; resolution; food inspection system; 300; GHZ; TRANSMISSION;
D O I：
10.1002/mop.28303
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A terahertz (THz) transmission imaging system using a 0.2 and 0.4 THz gyrotron as a high power source was evaluated. In the gyrotron, 0.2 THz is the first main mode and 0.4 THz is the second harmonic mode. The output power of gyrotron is about 100 W at 0.2 THz and 1 W at 0.4 THz. For fast imaging, the source output was shaped into a line beam and an array detector was used. Two reflecting mirrors were utilized for a reflective imaging system. A 0.8 mm resolution was obtained using a 0.4 THz transmission image. The feasibility of fast THz imaging for the inspection of foreign substances in food is demonstrated. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1211-1214, 2014
引用
收藏
页码：1211 / 1214
页数：4
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