【作者】 王晓红； 郭澜涛； 胡颖；

【Author】 WANG Xiaohong GUO Lantao HU Ying(Department of Physics, Capital Normal University, Beijing 100037, China)

【机构】 首都师范大学物理系；

【摘要】 太赫兹(THz)时域光谱技术是以飞秒激光为基础的一种新型的相干远红外光谱测量技术。研究物质与THz的相互作用是一个崭新的领域。本文利用太赫兹时域光谱技术首次测量了乙酸酐在0.2-2.4THz频谱范围内的透射光谱,得到了此物质在THz波段的吸收光谱。实验结果表明,乙酸酐在此波段有特征吸收峰,峰值位置在0.55THz处。研究乙酸酐的THz吸收光谱特性,对于建立乙酸酐在THz波段指纹谱数据库,检测环境中危险物质以及排除安全隐患具有重要意义。更多还原

【Abstract】 Terahertz time-domain spectroscopy is a new spectral technique which is based on femtosecond laser technology. This radiation band belongs to far infrared. It is a new research field of studying THz radiation interacting with materials. This paper firstly presents the absorption spectra of acetic anhydride by terahertz time-domain spectroscopy in the frequency range between 0.2 and 2.4 THz. The experimental results indicates that the acetic anhydride shows distinct characteristic spectra centered at 0.55 terahertz. This work establishes the basic data for the future identification and characterization of acetic anhydride and is very useful to measure the dangerous substance in the environment by terahertz technology.更多还原