光谱学与光谱分析 |
|
|
|
|
|
Frequency Correction in Terahertz Absorption Spectroscopy |
WU Bin1, 2, SHI Xue-shun1, 2, SUN Qing3, DENG Yu-qiang3, WANG Heng-fei2, CHEN Kun-feng2 |
1. Science and Technology on Electronic Test & Measurement Laboratory, Qingdao 266555, China 2. The 41st Institute of China Electronics Technology Group Corporation, Qingdao 266555, China 3. Optics Division, National Institute of Metrology, Beijing 100013, China |
|
|
Abstract Measurement errors in frequency domain always appear when testing samples’ terahertz (THz) absorption spectrum using terahertz time-domain spectroscopy (THz-TDS) system,which is supposed to be attributed to the sampling accuracy of the high speed electro-optic sampling system. In order to make the measurement have a high accuracy, the method of error correction was studied in the present article. Carbon monoxide in gas phase was employed as our standard sample, and its absorption spectrum at the pressure of 2.0×105 Pa was measured experimentally. Comparing the obtained absorption frequencies with the corresponding standard data in JPL database, we got the error values, and their distribution law shows that the values have a linear correlation with the standard absorption frequency. Based on this, the error correction model was built. Using the model to correct the experimental data, the result shows the maximum error after correction is reduced to 3.36 GHz, which is two orders of magnitude lower than the error before correction. This states that the model can be used to correct the error of the THz spectrum caused by high speed electro-optic sampling system. At last, the authors draw a conclusion that the THz-TDS system is supposed to be corrected by the terahertz spectrum of carbon monoxide before measurement, in this way, the terahertz spectrum of sample can have a high accuracy. The study contributes to the material identification and the construction of molecular spectroscopy database in THz region.
|
Received: 2013-01-03
Accepted: 2013-04-28
|
|
Corresponding Authors:
WU Bin
E-mail: wubinw@126.com
|
|
[1] Jassimn H, Abdullah I, Shaban A. European Journal of Scientific Research, 2012, 74: 487. [2] Palka N, Trzcinski T, Szustakowski M. Acta Physica Polonica A, 2012, 122: 946. [3] MA Feng-ying, CHI Quan, SU Jian-po, et al(马凤英, 池 泉, 苏建坡, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2012, 32(3): 610. [4] Hosako I, Fukunaga K. J. Infrared Milli. Terahz. Waves, 2011, 32: 722. [5] ZHANG Cun-lin, ZHANG Yan, ZHAO Guo-zhong, et al(张存林, 张 岩, 赵国忠, 等). Terahertz Sensing and Imaging(太赫兹感测与成像). Beijing: National Defense Industry Press(北京:国防工业出版社), 2008. 65. [6] Naftaly M, Dudley R, Fletcher J, et al. J. Opt. Soc. Am. B, 2009, 26: 1357. [7] Klatt G, Gebs R, Janke C, et al. Opt. Express, 2009, 17: 22847. [8] Foltynowicz R J, Allman R E. Terahertz Time Domain Spectroscopy of Atmospheric Water Vapor From 0.4 to 2.7 THz. United States: Sandia National Laboratories, 2005. [9] Xin X, Altan H, Saint A, et al. J. Appl. Phys., 2006, 100: 094905-1. [10] Rothmana L S, Jacquemart D, Barbe A, et al. J. Quant. Spectrosc. Radiat. Transf., 2005, 96: 139. [11] Varberg T D, Evenson K M. IEEE Trans. Instrum. Meas., 1993, 42: 412. [12] Western C M. Pgopher, a Program for Simulating Rotational Structures. University of Bristol. http://pgopher.chm.bris.ac.uk. |
[1] |
ZHANG Le-wen1, 2, WANG Qian-jin1, 3, SUN Peng-shuai1, PANG Tao1, WU Bian1, XIA Hua1, ZHANG Zhi-rong1, 3, 4, 5*. Analysis of Interference Factors and Study of Temperature Correction Method in Gas Detection by Laser Absorption Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 767-773. |
[2] |
LOU Deng-cheng, RAO Wei*, SONG Jun-ling, WANG Kai, JIANG Ya-jing, GUO Jian-yu. Research of Carbon Monoxide Concentration Measurement in Combustion Field by Off-Axis Integrated Cavity Output Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(12): 3678-3684. |
[3] |
XU Xing-wei1, 2, WANG Wei1*, LIU Cheng3, SHAN Chang-gong4, SUN You-wen1, HU Qi-hou1, TIAN Yuan1, HAN Xue-bing1, YANG Wei1. Observations of Total Columns of CO Based on Solar Absorption Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1329-1334. |
[4] |
LI Chun-guang1, DANG Jing-min1, CHEN Chen2*, WANG Yi-ding1*. Multi-Pass Absorption Spectroscopy for CO Detection Using a Quantum Cascaded Laser[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(05): 1308-1312. |
[5] |
CHEN Bing1, ZHOU Ze-yi2, KANG Peng1, LIU An-wen1, HU Shui-ming1* . Trace Carbon Monoxide Detection with a Cavity Ring-Down Spectrometer [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(04): 971-974. |
[6] |
CHEN Chen1, WANG Biao4, LI Chun-guang2, LI Jian2, 3*, WANG Yi-ding2* . A Trace Gas Sensor Using Mid-Infrared Quantum Cascaded Laser at 4.8 μm to Detect Carbon Monoxide[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(03): 838-842. |
[7] |
CHEN Xiao, SUI Qing-mei, MIAO Fei, JIA Lei, WANG Jing, JIANG Ming-shun . Research on Carbon Monoxide Multi-Parameter Detection Based on Ultra-Narrow-Linewidth Laser[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(10): 2829-2833. |
[8] |
Qiherima1, 3,YUAN Hui2,ZHANG Yun-hong1,LI Hui-feng2,XU Guang-tong2* . In Situ FTIR and XPS Study on Selective Hydrodesulfurization Catalyst of FCC Gasoline [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(07): 1752-1757. |
[9] |
CHEN Jin1, 2, DUAN Fa-jie1, TONG Ying2, GAO Qiang3 . Genetic Programming Used for the Measurement of CO Concentration Based on Nondispersive Infrared Absorption Spectroscopy [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(07): 1758-1761. |
[10] |
ZOU Han-bo, CHEN Sheng-zhou, WANG Qi-ying, LIU Zi-li, LIN Wei-ming . DRIFTS Study of Cu1Zr1Ce9Oδ Catalysts for Selective CO Oxidation [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(08): 2103-2106. |
[11] |
ZOU Han-bo, CHEN Sheng-zhou, WANG Qi-ying, LIU Zi-li, LIN Wei-ming . Study on CuO-CeO2 Catalysts Doped with Alkali and Alkaline Earth Metal Oxides by In-Situ DRIFTS [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(03): 672-676. |
[12] |
LIU Qian-qian1, JI Sheng-fu1*, WU Ping-yi1, HU Lin-hua2, HUANG Xiao-fan1, ZHU Ji-qin1, LI Cheng-yue1 . In Situ Diffuse Reflectance FTIR Spectroscopy Study of CO Adsorption on Ni2P/Mesoporous Molecule Sieve Catalysts [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(05): 1227-1231. |
[13] |
SUN Yue1, 2,YI Peng-fei1,CHEN Xian-meng1, 2,LIU Fu-sheng2, 3,ZHANG Ming-jian3,ZHENG Xue-ping3, XUE Xue-dong3. Emission Spectrum of Liquid CO-N2 Mixture at Shock Compression [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(04): 865-868. |
[14] |
HU Ying, WANG Xiao-hong, GUO Lan-tao, ZHANG Cun-lin. Terahertz Time-Domain Spectroscopic Study of Carbon Monoxide[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(06): 1008-1011. |
[15] |
WU De-yin, ZHENG Jian-zhou, REN Bin, XU Xin, TIAN Zhong-qun* . A Theoretical Study of the Influence of Interaction between Transition Metal Atoms and Carbon Monoxide on Infrared and Raman Intensities of the C—O Stretching Vibration [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(03): 365-368. |
|
|
|
|