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A trace gas sensor, based on quartz-enhanced photoacoustic spectroscopy (QEPAS) with two non-resonant micro-tubes, was designed to detect the ammonia concentration in impure helium. Unlike the traditional micro-resonator, the non-resonant micro-tubes are used to confine the sound wave, but do not exhibit a well-defined resonant behavior. Such a design makes the dimension of the spectrophone much smaller than the micro-resonant configuration, which facilitates the optical alignment. Signal and noise, that were dependent on gas pressure, were also investigated to optimize sensor performance. With the optimal sensor parameters and the optimal gas pressure, the detection sensitivity was found to be 463 ppb (1 , 1 s averaging time), which corresponds to the normalized absorption sensitivity of 4.310-9cm-1W/Hz.
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Keywords:
- gas sensor /
- quartz-enhanced photoacoustic spectroscopy /
- quartz tuning fork /
- purity analysis of hydrogen-like gas
[1] Li Z Y, Wang H H, Jiang N, Cheng S L, Zhao L, Yu X 2009 Acta Phys.Sin. 58 3821 (in Chinese) [李政颖, 王洪海, 姜宁, 程松林, 赵磊, 余鑫 2009 物理学报 58 3821]
[2] Liu Z M, Liu W Q, Gao M G, Tong J J, Zhang T S, Xu L, Wei X L 2008 Chin. Phys. B 17 4184
[3] Kosterev A A, Tittel F K, Serebryakov D V, Malinovsky A L, Morozov I V 2005 Rev. Sci. Instrum. 76 043105
[4] Kosterev A A, Bakhirkin Y A, Curl R F, Tittel F K 2002 Opt. Lett. 27 1902
[5] Dong L, Kosterev A A, Thomazy D, Tittel F K 2010 Appl. Phys. B 100 627
[6] Liu K, Guo X, Yi H, Chen W, Zhang W, Gao X 2009 Opt. Lett. 34 1594
[7] Yi H, Liu K, Chen W, Tan T, Wang L, Gao X 2011 Opt. Lett. 36 481
[8] Petra N, Zweck J, Kosterev A A, Minkoff S E, Thomazy D 2009 Appl. Phy. B 94 73
[9] Wang G S, Yi H M, Cai T D, Wang L, Tan T, Zhang W J, Gao X M 2012 Acta Phys. Sin. 61 120701 (in Chinese) [王贵师, 易红明, 蔡廷栋, 汪磊, 谈图, 张为俊, 高晓明 2012 物理学报 61 120701]
[10] Serebryakov D V, Morozov L V, Kosterev A A, Letokhov V S 2010 Quantum Electron 40 167
[11] Engeln R, Berden G, Peeters R, Meijer G 1998 Rev. Sci. Instrum. 69 3763
[12] Jia H, Zhao W X, Cai T D , Chen W D, Zhang W J, Gao X M 2009 ELSEVIER 110 347
[13] Webber M E, Pushkarsky M , Patel C K N 2003 Appl. Opt. 42 2119
[14] Dong L, Zhang L, Dou H P, Ying W B, Jia S T 2008 Chin. Phys. B 17 152
[15] Tittel F K, Kosterev A A 2004 Appl. Opt. 43 6213
[16] Kosterev A A, Bakhirkin Y A, Tittel F K, Mcwhorter S, Ashcraft B 2008 Appl. Phys. B Lasers and Optics 92 103
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[1] Li Z Y, Wang H H, Jiang N, Cheng S L, Zhao L, Yu X 2009 Acta Phys.Sin. 58 3821 (in Chinese) [李政颖, 王洪海, 姜宁, 程松林, 赵磊, 余鑫 2009 物理学报 58 3821]
[2] Liu Z M, Liu W Q, Gao M G, Tong J J, Zhang T S, Xu L, Wei X L 2008 Chin. Phys. B 17 4184
[3] Kosterev A A, Tittel F K, Serebryakov D V, Malinovsky A L, Morozov I V 2005 Rev. Sci. Instrum. 76 043105
[4] Kosterev A A, Bakhirkin Y A, Curl R F, Tittel F K 2002 Opt. Lett. 27 1902
[5] Dong L, Kosterev A A, Thomazy D, Tittel F K 2010 Appl. Phys. B 100 627
[6] Liu K, Guo X, Yi H, Chen W, Zhang W, Gao X 2009 Opt. Lett. 34 1594
[7] Yi H, Liu K, Chen W, Tan T, Wang L, Gao X 2011 Opt. Lett. 36 481
[8] Petra N, Zweck J, Kosterev A A, Minkoff S E, Thomazy D 2009 Appl. Phy. B 94 73
[9] Wang G S, Yi H M, Cai T D, Wang L, Tan T, Zhang W J, Gao X M 2012 Acta Phys. Sin. 61 120701 (in Chinese) [王贵师, 易红明, 蔡廷栋, 汪磊, 谈图, 张为俊, 高晓明 2012 物理学报 61 120701]
[10] Serebryakov D V, Morozov L V, Kosterev A A, Letokhov V S 2010 Quantum Electron 40 167
[11] Engeln R, Berden G, Peeters R, Meijer G 1998 Rev. Sci. Instrum. 69 3763
[12] Jia H, Zhao W X, Cai T D , Chen W D, Zhang W J, Gao X M 2009 ELSEVIER 110 347
[13] Webber M E, Pushkarsky M , Patel C K N 2003 Appl. Opt. 42 2119
[14] Dong L, Zhang L, Dou H P, Ying W B, Jia S T 2008 Chin. Phys. B 17 152
[15] Tittel F K, Kosterev A A 2004 Appl. Opt. 43 6213
[16] Kosterev A A, Bakhirkin Y A, Tittel F K, Mcwhorter S, Ashcraft B 2008 Appl. Phys. B Lasers and Optics 92 103
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