%0 Journal Article
%T Investigation on reflection tomography imaging with terahertz wave of nonparallel interfaces inside the sample<br>样品内部非平行界面的反射式terahertz波层析研究
%A Xi Zai-Jun
%A Xiao Ti-Qiao
%A Zhang Zeng-Yan
%A Chen Min
%A Yu Xiao-Han
%A Xu Hong-Jie
%A <br>席再军
%A 肖体乔
%A 张增艳
%A 陈敏
%A 余笑寒
%A 徐洪杰
%J 物理学报
%D 2006
%I 
%X In previous studies on reflection tomography imaging with terahertz wave, only parallel interfaces were considered. In this article we report the numerical simulation on reflection tomography imaging with terahertz wave of nonparallel interfaces inside the sample. The reconstructing algorithm is given according to the physical model and the correlative reconstructing software is compiled. The results show that the reconstructing method of nonparallel interface is feasible. The analysis indicates that the reconstructing errors result from approximate treatment and accumulative error. The approximate treatment method of the curve contour is discussed. If the curvature radii at all points are large, the curve can be treated by cutting it into several line segmeants. The factors affecting longitudinal resolution are analyzed finally. The results show that the longitudinal resolution becomes worse as the pulse width of input pulse becomes larger. The longitudinal resolution can reach sub-millimeter size usually.
%K terahertz wave
%K reflection tomography imaging<br>terahertz波
%K 反射式层析成像
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=157AF3CC797625C9&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=94C357A881DFC066&sid=B7FFAC52F43C6AF4&eid=A05AF66BE0C3DF48&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=10