Studies on Signal-to-Noise Ratio Standardization for THz Time-Domain Spectroscopy
LI Meng1,2, HE Ming-xia1,2*, TIAN Zhen1
1. Centre for Terahertz Waves and College of Prceision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China 2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
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.
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