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The intra-pulse spectroscopy based on room-temperature pulsed quantum cascade(QC) lasers was introduced. With a room-temperature pulsed QC laser centered at 1904 cm-1, the sample NO gas has been detected.The least-squared algorithm of baseline fitting and concentration retrieving method were introduced for the single line spectroscopy detection, and the gas concentration can be calculated with scan integration and the corresponding values from HITRAN04 database by direct-absorption technique, without calibration. The detection limit was obtained by analyzing the residual of the absorption spectroscopy as 34 ×10-6m.
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Keywords:
- quantum cascade laser /
- mid-infrared /
- polynomial fitting /
- scan integration
[1] ［1］Zhang Z B, Ren C Y, Liu C Y, Xing L, Liu L S 2003 J. Ocean Univ. Qingdao 33 425 (in Chinese) ［张正斌、任春艳、刘春颖、邢磊、刘莲生 2003 青岛海洋大学学报 33 425］
[2] ［2］Kan R F, Liu W Q, Zhang Y J, Liu J G, Dong F Z, Gao S H, Wang M, Chen J 2005 Acta Phys. Sin. 54 1927 (in Chinese)［阚瑞峰、刘文清、张玉钧、刘建国、董凤忠、高山虎、王敏、陈军 2005 物理学报 54 1927］
[3] ［3］Kosterev A A, Tittel F K 2002 IEEE J. Quantum Electron. 38 582
[4] ［4］Zhang Y G, Xu G Y, Li A Z, Li Y Y, Gu Y, Liu S, Wei L 2006 Chin. Phys. Lett. 23 1780
[5] ［5］Zhang Y G, Gu Y, Zhang X J, Li A Z, Tian Z B 2008 Chin.Phys. Lett. 25 3246
[6] ［6］McCulloch M T, Normand E L, Langford N, Duxbury G 2003 J. Opt. Soc. Am. B 20 1761
[7] ［7］Pflügl C, Schrenk W, Anders S, Strasser G 2004 Semicond. Sci. Technol. 19 336
[8] ［8］Normand E, McCulloch M, Duxbury G, Langford N 2003 Opt. Lett. 28 16
[9] ［9］Leleux D P 2002 Ph. D. Dissertation (Houston: Rice University)
[10] ］Zhou X 2005 Ph. D. Dissertation (Stanford: Stanford University)
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[1] ［1］Zhang Z B, Ren C Y, Liu C Y, Xing L, Liu L S 2003 J. Ocean Univ. Qingdao 33 425 (in Chinese) ［张正斌、任春艳、刘春颖、邢磊、刘莲生 2003 青岛海洋大学学报 33 425］
[2] ［2］Kan R F, Liu W Q, Zhang Y J, Liu J G, Dong F Z, Gao S H, Wang M, Chen J 2005 Acta Phys. Sin. 54 1927 (in Chinese)［阚瑞峰、刘文清、张玉钧、刘建国、董凤忠、高山虎、王敏、陈军 2005 物理学报 54 1927］
[3] ［3］Kosterev A A, Tittel F K 2002 IEEE J. Quantum Electron. 38 582
[4] ［4］Zhang Y G, Xu G Y, Li A Z, Li Y Y, Gu Y, Liu S, Wei L 2006 Chin. Phys. Lett. 23 1780
[5] ［5］Zhang Y G, Gu Y, Zhang X J, Li A Z, Tian Z B 2008 Chin.Phys. Lett. 25 3246
[6] ［6］McCulloch M T, Normand E L, Langford N, Duxbury G 2003 J. Opt. Soc. Am. B 20 1761
[7] ［7］Pflügl C, Schrenk W, Anders S, Strasser G 2004 Semicond. Sci. Technol. 19 336
[8] ［8］Normand E, McCulloch M, Duxbury G, Langford N 2003 Opt. Lett. 28 16
[9] ［9］Leleux D P 2002 Ph. D. Dissertation (Houston: Rice University)
[10] ］Zhou X 2005 Ph. D. Dissertation (Stanford: Stanford University)
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