›› 2013, Vol. 26 ›› Issue (12): 107-.

• 论文 • 上一篇    下一篇



  1. (德州学院 机电系,山东 德州 253023)
  • 出版日期:2013-12-15 发布日期:2014-01-10
  • 作者简介:刘建昌(1991—),男,本科。研究方向:测控技术。E-mail:elecair@163.com
  • 基金资助:


Application of the Tunable Laser Spectroscopy System in Gas Detection

 LIU Jian-Chang, DENG Guang-Fu   

  1. (Department of Machines and Electronic,Dezhou College,Dezhou 253023,China)
  • Online:2013-12-15 Published:2014-01-10



关键词: 光谱学, 可调谐激光光谱, 谐波分析, 浓度检测


The tunable diode laser absorption spectroscopy is adopted for quick and precise gas concentration measurement.Theoretical analysis shows that the even harmonics reach maximum at the resonant location and its amplitude drops successively,and therefore the concentration of gas can be obtained by the second harmonic detection method.An experimental system is established to detect the concentration of 0%~ 15% CH4 gases.Theoretical analysis and experimental results show that the linear dependency between the amplitude of second harmonic and the concentration value of gas can reach 0.994,indicating that accurate concentration value of gas can be obtained by second harmonic.

Key words: spectroscopy;tunable laser spectroscopy;harmonic analysis;concentration detection


  • O433.1