Temperature measurement of CO2 by use of a distributed-feedback diode laser sensor near 2.0 μm

Jiuying Chen, Jianguo Liu, Yabo He, Zhenyu Xu, Han Li, Lu Yao, Song Yuan, Jun Ruan, Junfeng He, Ruifeng Kan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Temperature measurement is realized by scanning two absorption lines of CO2 using distributed-feedback diode laser near 2.0 μm. The fundamental of temperature measurement by tunable diode laser absorption spectroscopy (TDLAS) is introduced, and multi-line nonlinear fitting method is proposed. The experiment is carried out in a heated static quartz cell at normal pressure. Within the temperature range from 900 K to 1200 K, the difference between TDLAS and S-thermocouple is less than 8%. Relative error between measured line-strength at 5007.7874 cm-1 and the theoretical value is less than 14%. The result analysis can be useful for the further research on concentration and temperature measurement by a single diode laser.

Original languageEnglish
Pages (from-to)1108004
Number of pages1
JournalZhongguo Jiguang/Chinese Journal of Lasers
Issue number11
Publication statusPublished - Nov 2012
Externally publishedYes


  • Absorbance
  • Measurement
  • Temperature measurement
  • Tunable diode laser absorption spectroscopy

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