Measurement of Trace Water Vapor Based on Tunable Diode Laser Absorption Spectroscopy

Yipeng Zang; Wei Nie; Zhenyu Xu; Yuquan Peng; Ruifeng Kan

doi:10.3788/AOS201838.1130004

Acta Optica Sinica, Volume. 38, Issue 11, 1130004(2018)

Measurement of Trace Water Vapor Based on Tunable Diode Laser Absorption Spectroscopy

Yipeng Zang^1,2、*, Wei Nie^1,2, Zhenyu Xu¹, Yuquan Peng^1,2, and Ruifeng Kan^1、*

¹ Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China

² University of Science and Technology of China, Hefei, Anhui 230026, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(6)

Fig. 1. Schematic of experimental system for gas absorption spectrum measurement

Download full size

Fig. 2. (a) Interference signal of etalon and laser transmission signal; (b) Voigt three-line fitting results; (c) fitting residual

Download full size

Fig. 3. (a) Experimental system for background absorption deduction and (b) background water vapor absorption of TDLAS system

Download full size

Fig. 4. (a) Original absorption spectrum of water vapor in high purity nitrogen; (b) sine fitting result of interference signal in laser; (c) Voigt fitting result of absorption signal after removing background; (d) fitting residual

Download full size

Table 1. Line strength of three absorption lines of CH4 pan-frequency 2v3 band R(3) branch rotation transition near 1653.72 nm in HITRAN database
View table
Table 1. Line strength of three absorption lines of CH4 pan-frequency 2v3 band R(3) branch rotation transition near 1653.72 nm in HITRAN database
Wavenumber /cm^-1 Line strength /(cm^-1·molecule^-1·cm²) Low state energy level E″ /cm^-1
6046.9420 8.17×10^-22 62.88
6046.9527 1.00×10^-21 62.88
6046.9647 1.32×10^-21 62.88

Table 2. Integral absorbance of absorption spectrum of water vapor in high purity nitrogen in the experiment
View table
Table 2. Integral absorbance of absorption spectrum of water vapor in high purity nitrogen in the experiment
Production time of high purity nitrogen Experimental value /10^-6 Deviation /%
20170929 3.23 7.67
20171029 3.11 3.67
20180326 3.31 10.33

Tools

Get Citation

Copy Citation Text

Yipeng Zang, Wei Nie, Zhenyu Xu, Yuquan Peng, Ruifeng Kan. Measurement of Trace Water Vapor Based on Tunable Diode Laser Absorption Spectroscopy[J]. Acta Optica Sinica, 2018, 38(11): 1130004

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Spectroscopy

Received: Apr. 27, 2018

Accepted: Jun. 9, 2018

Published Online: May. 9, 2019

The Author Email:

DOI:10.3788/AOS201838.1130004

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Line strength of three absorption lines of CH4 pan-frequency 2v3 band R(3) branch rotation transition near 1653.72 nm in HITRAN database

Table 1. Line strength of three absorption lines of CH4 pan-frequency 2v3 band R(3) branch rotation transition near 1653.72 nm in HITRAN database

Table 2. Integral absorbance of absorption spectrum of water vapor in high purity nitrogen in the experiment

Table 2. Integral absorbance of absorption spectrum of water vapor in high purity nitrogen in the experiment