红外与毫米波学报2009，Vol.28Issue(4)：241-245,5.
基于太赫兹波时域光谱的纸页定量检测新方法
NEW METHOD FOR PAPER BASIS WEIGHT MEASUREMENT BASED ON TERAHERTZ TIME DOMAIN SPECTROSCOPY
摘要
Abstract
Measurement of basis weight which is one of the most important physical indexes of paper sheet is of decisive im-portance in paper making process. However, this problem has not been well solved so far. Terahertz time domain spectros-copy is a newly developed spectroscopy technique based on femtosecond laser technology, and has been studied in some other research fields. The purpose of this work is to study the feasibility of applying terahertz time-domain spectroscopy technique to the measurement of paper sheet basis weight. Two principles were presented in this study. One was based on terahertz amplitude attenuation and the other was on terahertz delay time. Experiments were carried out to verify the theoret-ical analysis and compare the performances of these two proposed principles. The experimental results show that delay-time-based method is better than amplitude-attenuation-based method in terms of linearity and accuracy. The research work indi-cates that the method based on terahertz delay time is feasible for paper basis weight measurement. And it may provide a new solution for paper basis weight measurement.关键词
太赫兹波/时域光谱/定量(单位面积纸的重量)/相对误差Key words
terahertz wave/time domain spectroscopy/basis weight/relative error分类
信息技术与安全科学引用本文复制引用
曹丙花,张光新,周泽魁..基于太赫兹波时域光谱的纸页定量检测新方法[J].红外与毫米波学报,2009,28(4):241-245,5.基金项目
Supported by the National Natural Science Foundation of China(60774054)and the Ph.D.Programs Foundation of Ministry of Education of China(2007335123). （60774054）
