Chinese Optics Letters, 2020, 18 (5): 051401, Published Online: Apr. 23, 2020
Temperature measurement based on adaptive dual-comb absorption spectral detection Download: 724次
Abstract
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.
Kangwen Yang, Hai Li, Hang Gong, Xuling Shen, Qiang Hao, Ming Yan, Kun Huang, Heping Zeng. Temperature measurement based on adaptive dual-comb absorption spectral detection[J]. Chinese Optics Letters, 2020, 18(5): 051401.