Effect of laser linewidth on the tunable diode laser absorption spectroscopy system

被引：0

作者：

Rui, Zhang ^{[1
]}

Fang, Wang ^{[1
]}

Yan, Wang ^{[2
]}

Bo, Yan ^{[1
]}

Hong-Fei, Guo ^{[3
,4
]}

Feng-Jiang, Xi ^{[5
]}

Xin-Bo, Li ^{[1
]}

机构：

[1] Tianjin Univ Sci & Technol, Coll Elect Informat & Automat, Tianjin 300222, Peoples R China

[2] Tianjin Chengjian Univ, Sch Comp & Informat Engn, Tianjin 300384, Peoples R China

[3] Jinan Univ, Inst Phys Internet, Zhuhai 519070, Peoples R China

[4] Jinan Univ, Sch Intelligent Syst Sci & Engn, Zhuhai 519070, Peoples R China

[5] Inner Mongolia Remote Sensing Ctr Co Ltd, Hohhot 010010, Inner Mongolia, Peoples R China

来源：

LASER PHYSICS | 2020年 / 30卷 / 12期

关键词：

TDLAS; laser linewidth; Lorentz; line shape; FREQUENCY-NOISE;

D O I：

10.1088/1555-6611/abc32b

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, a theoretical investigation of the influence of laser linewidth on the tunable diode laser absorption spectroscopy system is presented. The theoretical analysis and formula discussion of laser line shape are carried out by frequency noise spectrum density. Taking Lorentz line shape of laser line width as an example, the interaction principle of laser line width and gas absorption spectral line is analyzed. The relation curve of laser linewidth and maximum amplitude is simulated by MATLAB platform with self-defined simulation parameters. These results can provide theoretical basis for guiding the selection of laser and gas absorption spectral line and improving the detection accuracy of gas concentration.

引用

页数：5

共 23 条

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