摘要
将小波变换引入THz波时域光谱技术.将水蒸气的THz波时域信号通过小波变换转化为二维的时间-频率平面,得到了和文献报道数据相一致的水蒸气的吸收谱线.同时发现了THz波频谱的时域分布特性,这将有利于进一步研究THz波与物质相互作用的内在机理.
The application of the wavelet-transform to terahertz time-domain spectroscopy (THz-TDS) is described. Using wavelet-transform to analyze the time-domain signals passing through water vapor measured by time-domain spectroscopy, we got the absorption spectra of water vapor in the frequency range from 0.5 to 2.5THz, which agree well with the results reported in the literature. Moreover, wavelet-transform in THz-TDS opens up a new way for the analysis of the time-domain properties of absorption spectra of water vapor.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第11期5224-5227,共4页
Acta Physica Sinica
基金
国家自然科学基金(批准号60278002)
天津大学学科建设专项基金
国家重大基础研究专项经费(批准号:G1999075201)
教育部光电信息技术科学重点实验室开放课题(批准号:2003-14)资助的课题.~~