Temperature measurement based on adaptive dual-comb absorption spectral detection

被引：7

作者：

Yang, Kangwen ^{[1
]}

Li, Hai ^{[1
]}

Gong, Hang ^{[1
]}

Shen, Xuling ^{[2
]}

Hao, Qiang ^{[1
]}

Yan, Ming ^{[2
]}

Huang, Kun ^{[1
]}

Zeng, Heping ^{[1
,2
]}

机构：

[1] Univ Shanghai Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Sch Opt Elect & Comp Engn, Shanghai Key Lab Modern Opt Syst,Minist Educ, Shanghai 200093, Peoples R China

[2] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2020年 / 18卷 / 05期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

ultrafast lasers; laser spectroscopy; absorption; temperature; GAS TEMPERATURE; WATER-VAPOR; SPECTROSCOPY;

D O I：

10.3788/COL202018.051401

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate absorption spectroscopy of water vapor for the determination of gas temperature. An adaptive dual-comb detection system is utilized to obtain precise spectroscopic data in a broadband range from 7143 to 7240 cm(-1) with a spectral resolution of 0.049 cm(-1). The measured spectra are in accordance with the simulated results from the HITRAN (high-resolution transmission molecular absorption) database. Several measurements are investigated in the temperature range of 500-1000 K, revealing relative deviations of less than 5% compared to the thermocouple. This broadband and accurate adaptive dual-comb spectral detection method could be a powerful tool for non-invasive combustion diagnosis.

引用

页数：5

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