光谱学与光谱分析, 2012, 32 (3): 606, 网络出版: 2012-04-16
太赫兹时域频谱信噪比分析与规范性研究
Studies on Signal-to-Noise Ratio Standardization for THz Time-Domain Spectroscopy
摘要
基于飞秒激光的太赫兹脉冲时域光谱技术, 已经成为诸多科学领域研究中有效的新手段。 文章分析了太赫兹时域系统频谱采集方式的特点, 提出标准信噪比的概念, 使不同的太赫兹时域频谱仪可以在同一标准下进行量化评价。 在研究了信噪比特点的基础上, 给出了太赫兹时域频谱信噪比的简单获取方法。 并采用这种方法对几个著名太赫兹研究小组的时域频谱系统的信噪比进行了比对。 该方法让使用者只须获取单次测量数据就能换算出系统的标准信噪比, 给用户评价太赫兹时域频谱系统带来了极大便利。
Abstract
In the present article the concept of standard signal-to-noise ratio (StSNR) for THz time-domain spectroscopy was introduced, with which different systems could be evaluated quantitatively. Based on the characteristics of SNR, a brief method was given for acquiring StSNR. With this method for calculating the StSNR, the result data of a single test was the only item needed, which eased the users lot to compare the capability of various THz time-domain spectrometers. According to this method, a number of THz-TDS systems applied in various THz research groups were evaluated.
李萌, 何明霞, 田震. 太赫兹时域频谱信噪比分析与规范性研究[J]. 光谱学与光谱分析, 2012, 32(3): 606. LI Meng, HE Ming-xia, TIAN Zhen. Studies on Signal-to-Noise Ratio Standardization for THz Time-Domain Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2012, 32(3): 606.