脉冲太赫兹波成像与连续波太赫兹成像特性的比较  

Comparison Between Pulsed Terahertz Imaging and Continuous-Wave Terahertz Imaging

作　　者：杨昆[1] 赵国忠[1] 梁承森[1] 武利忠[1] 

机构地区：[1]首都师范大学物理系太赫兹波谱与成像北京市重点实验室,太赫兹光电子学省部共建教育部重点实验室,北京100048

出　　处：《中国激光》2009年第11期2853-2858,共6页Chinese Journal of Lasers

基　　金：国家973计划(2007CB310408);国家自然科学基金(10474067);北京市自然科学基金(1092007);北京市教育委员会高等教育人才强教计划资助课题

摘　　要：对脉冲太赫兹(THz)波成像和连续波太赫兹成像进行了对比研究。在两个系统下分别进行实验,对两个成像系统的成像机理、系统分辨率、系统噪声、成像速度、信息量、价格、复杂性、便携性及其应用进行多方面的比较。研究结果表明,脉冲系统可以获取更多信息,连续波系统简单便捷,两者在应用上具有各自的特点,同时又有很好的互补性。另外,就脉冲太赫兹波成像的多波长特点,探讨了太赫兹波多光谱成像识别方法。We investigate two important aspects of the terahertz imaging technology. They are the pulsed terahertz spectral imaging and the continuous wave terahertz imaging. Experimentally,we obtain terahertz images by these two imaging systems. We compared many aspects between the pulsed imaging system and the continuous wave imaging system,such as imaging mechanism,system resolution,system noise,imaging speed,information capacity,price,complexity,portability and their applications. Experimental results show that the pulsed imaging system has an obvious advantage that it can get more spectral information,on the other hand the continuous wave imaging system is simple and compact. The two systems have their own strong points,and are complementary to each other. In addition,we present an identification method based on the terahertz multi-spectral imaging technology.

关 键 词：光谱学 脉冲 连续波 太赫兹 成像 

分 类 号：TN911.73[电子电信—通信与信息系统]