A new method of background elimination and baseline correction for the first harmonic

Zhang Rui; Zhao Xue-Hong; Hu Ya-Jun; Guo Yuan; Wang Zhe; Zhao Ying; Li Zhi-Xiao; Wang Yan

doi:10.7498/aps.63.070702

Abstract

A new method of background elimination and baseline correction is proposed, since there are background signal and larger baseline signal in the first harmonic (1f) of the tunable diode laser absorption spectroscopy (TDLAS). The laser-associated intensity modulation signal, electronic noise, and optical interference fringes of the 1f background are analyzed. Harmonic detection in none absorption spectral region (HDINASR) is used to eliminate the background signal. Then the relationship curve between current and intensity is given in different operating temperatures to design a remaining baseline correction method after eliminating the background. The principle of background signal searching and the LabView software flow chart are also given. The TDLAS experimental system is designed to detect hydrogen fluoride (HF) gas. According to spectral line selection principle, the absorption line -1312.59 nm is selected, whose operating temperature is set at 27.0 ℃ and the background temperature is set at 30.2 ℃. After eliminating the background and correcting the baseline, signal distortion is significantly improved and baseline is corrected. Then it is verified that the method is valid at other operating temperature of the laser (26.7-27.2). And the improvement of HF gas concentration is quantitatively analyzed. It is convenient for the subsequent processing of 1f signal.

Keywords:

tunable diode laser absorption spectroscopy(TDLAS) /
first harmonic /
background elimination /
baseline correction

Authors and contacts

1.
College of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China;
2.
College of Electronic Information and Automation, Tianjin University of Science & Technology, Tianjin 300222, China
Funds: Project supported by the National Basic Research Program of China(Grant No. 2010CB327800)、the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20090032110053).

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[59]
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[64]
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[66]
[67]	Han R F, Liu W Q, Zhang Y J, Liu J G, Dong F Z, Wang M, Gao S H, Chen D 2006 Acta Optica Sinica 26 67(in Chinese) [阚瑞峰, 刘文清, 张玉钧, 刘建国, 董凤忠, 王敏, 高山虎, 陈东 2006光学学报 33 67]

Cited By

[1]	Che L, Ding Y J, Peng Z M, Li X H 2012 Chin. Phys. B 21 127803
[2]	Li J Y, Du Z H, Ma Y W, Xu K X 2013 Chin. Phys. B 22 034203
[3]
[4]
[5]	Zhang L, Liu J G, Kan R F, Liu W Q, Zhang Y J, Xu Z Y, Chen J 2012 Acta Phys. Sin. 61 034214 (in Chinese)[张亮刘建国阚瑞峰, 刘文清, 张玉钧, 许振宇, 陈军 2012 61 034214]
[6]
[7]	Zhang Y G, Gu Y, Zhang X J, Li A Z, Tian S B 2008 Chin. Phys. Lett. 25 3246
[8]
[9]	Gustafsson J, Chekalin N, Axner O 2003 Spectrochimica Acta Part B 58 123
[10]	Zhang S, Liu W Q, Zhang Y J, Ruan J, Kan R F, You K, Yu D Q, Huang J T, Han X L 2012 Acta Phys. Sin. 61 050701
[11]
[12]
[13]	Wang F, Huang Q X, Li N, Yan J H, Chi Y, Cen K F 2007 Acta Phys. Sin. 56 3867
[14]	Werle P 1998 Spectrochimica Acta A 54 197
[15]
[16]
[17]	Chakraborty A L, Ruxton K, Johnstone W, Michael L, Duffin K 2009 Opt. Express 17 9602
[18]	Chakraborty A L, Ruxton K, Johnstone W 2010 Opt. Express 18 267
[19]
[20]	Farooq A, Jeffries J B, Hanson R K 2009 Appl. Opt. 48 6740
[21]
[22]	Rieker G B, Jeffries J B, Hanson R K 2009 Appl. Opt. 48 5546
[23]
[24]	Ren W, Jeffries J B, Hanson R K 2010 Meas. Sci. Technol. 2 1
[25]
[26]
[27]	Cai T D, Gao G Z, Liu Y 2012 Appl. Spectrosc. 66 1210
[28]	Chao X, Jeffries J B, Hanson R K 2012 Appl. Phys. B 106 987
[29]
[30]	Duffin K, McGettrick A J, Johnstone W, Stewart G, Moodie D M 2007 J. of Lightwave Technology 25 3114
[31]
[32]	Cao J N, Zhang K K, Wang Z 2010 Chinese Journal of Scientific Intrument 31 2597(in Chinese) [曹家年, 张可可, 王琢2010 仪器仪表学报 31 2597]
[33]
[34]	Ruxton K, Chakraborty A L, Johnstone W, Lengden M, Stewart G, Duffin K 2010 Sensors Actuators B 150 367
[35]
[36]
[37]	Li L, Arsad N, Stewart G, Thursby G, Culshaw B, Wang Y D 2011 Opt. Communications 284 312
[38]	Reid J, M. El-Sherbiny, Garside B K, EI-Sherbiny M, Garside B K, Ballik E A 1980 Appl. Opt. 19 3349
[39]
[40]
[41]	Silver J A, Stanton A C 1988 Appl. Opt. 27 1914
[42]
[43]	Johnson T J, Wienhold F G, Burrow J P, Harris G W 1991 Appl. Opt. 30 407
[44]	Wu S Q, Kimishima T, Kuze H, Takeuchi N 2000 Appl. Phys. 39 4034
[45]
[46]
[47]	Werle P W, Mazzinghi P, D'Amato F, De Rosa M, Maurer K, Slemr F 2004 Spectrochimica Acta A 60 1685
[48]
[49]	Xu Z Y, Liu W Q, Han R F, Zhang Y J, Zhang S, Shu X W, Geng H, He Y, Tang Y Y 2010 Spectrosc. m Spectral Anal. 30 2201 (in Chinese) [许振宇, 刘文清, 阚瑞峰, 张玉钧, 刘建国, 张帅, 束小文, 耿辉, 何莹, 汤媛媛 2010光谱学与光谱分析 30 2201]
[50]
[51]	Li N, Yan J H, Wang F, Chi Y, Cen K F 2008 Spectrosc. m Spectral Anal. 28 1708 (in Chinese) [李宁, 严建华, 王飞, 池涌, 岑可法 2008 光谱学与光谱分析 28 1708]
[52]
[53]	Sun Y, Du Z H, Yin X, Xu K X 2008 Spectrosc. m Spectral Anal. 28 2282 (in Chinese) [孙毅杜振辉, 尹新, 徐可欣 2008 光谱学与光谱分析 28 2282]
[54]
[55]	Lunga G D, Pogni R, Basosi R 1994 J. Magn. Reson. Series A 108 65
[56]	Hu Y G, Zhao Z Y, Wang G 2011 J. Huazhong Univ. of Sci. Tech (Natural Science Edition) 39 36(in Chinese) [胡耀垓, 赵正予, 王刚2011华中科技大学学报(自然科学版) 39 36]
[57]
[58]	Liu Y, Liu K, Tao W L, Wang X P 2010 Spectrosc. Spectral Anal. 30 1688 (in Chinese) [刘艳, 刘凯, 陶维亮, 王先培2010光谱学与光谱分析 30 1688]
[59]
[60]	Bomse D S, Kane D J 2006 Appl. Phys. B 85 461
[61]
[62]
[63]	Zhang R, Zhao X H, Hu Y J, Guo Y, Liu Y L, Wang Y 2013 Acta Optica Sinica 33 0430006 (in Chinese) [张锐, 赵学玒, 胡雅君, 郭媛, 刘艳丽, 汪曣 2013 光学学报 33 0430006]
[64]
[65]	McGettrick A J, Duffin K, Johnstone W, Stewart G, Moodie D G 2008 J. of Lightwave Technology 26 432
[66]
[67]	Han R F, Liu W Q, Zhang Y J, Liu J G, Dong F Z, Wang M, Gao S H, Chen D 2006 Acta Optica Sinica 26 67(in Chinese) [阚瑞峰, 刘文清, 张玉钧, 刘建国, 董凤忠, 王敏, 高山虎, 陈东 2006光学学报 33 67]

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Vol. 63, Issue 7 - 2014-04-05

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