[1] World Meteorological Organization. The state of greenhouse gases in the atmosphere based on global observation through 2019[R]. Geneva: WMO, 16(2020).
[2] General Administration of Quality Supervision, Inspection, Quarantine of the People’s Republic of China, Standardization Administration of the People’s Republic of China,. National standard (recommended) of the People’(2010).
[3] Wang Z, Wang Q. Ching J Y L, et al. A portable low-power QEPAS-based CO2 isotope sensor using a fiber-coupled interband cascade laser[J]. Sensors and Actuators B: Chemical, 246, 710-715(2017).
[4] Pogány A, Wagner S, Werhahn O et al. Development and metrological characterization of a tunable diode laser absorption spectroscopy (TDLAS) spectrometer for simultaneous absolute measurement of carbon dioxide and water vapor[J]. Applied Spectroscopy, 69, 257-268(2015).
[5] Crosson E R. A cavity ring-down analyzer for measuring atmospheric levels of methane, carbon dioxide, and water vapor[J]. Applied Physics B, 92, 403-408(2008).
[6] Laurila T, Cattaneo H, Pöyhönen T et al. Cantilever-based photoacoustic detection of carbon dioxide using a fiber-amplified diode laser[J]. Applied Physics B, 83, 285-288(2006).
[7] Wu H P, Peng S N, Zhao J B et al. Research on high sensitive detection of CO2 gas based on power-boosted QEPAS technology[J]. Spectroscopy and Spectral Analysis, 39, 840-844(2019).
[9] Ding W, Wang Y Y, Gao S F et al. Recent progress in low-loss hollow-core anti-resonant fibers and their applications[J]. IEEE Journal of Selected Topics in Quantum Electronics, 26, 1-12(2020).
[10] Jaworski P, Kozioł P, Krzempek K et al. Antiresonant hollow-core fiber-based dual gas sensor for detection of methane and carbon dioxide in the near- and mid-infrared regions[J]. Sensors, 20, 3813(2020).
[11] Nikodem M, Gomółka G, Klimczak M et al. Laser absorption spectroscopy at 2 μm inside revolver-type anti-resonant hollow core fiber[J]. Optics Express, 27, 14998-15006(2019).
[12] Jin W, Cao Y C, Yang F et al. Ultra-sensitive all-fibre photothermal spectroscopy with large dynamic range[J]. Nature Communications, 6, 6767(2015).
[13] Lin Y C, Jin W, Yang F et al. Performance optimization of hollow-core fiber photothermal gas sensors[J]. Optics Letters, 42, 4712-4715(2017).
[14] Yang F, Tan Y Z, Jin W et al. Hollow-core fiber Fabry-Perot photothermal gas sensor[J]. Optics Letters, 41, 3025-3028(2016).
[15] Bao H H, Hong Y Z, Jin W et al. Modeling and performance evaluation of in-line Fabry-Perot photothermal gas sensors with hollow-core optical fibers[J]. Optics Express, 28, 5423-5435(2020).
[16] Chen F F, Jiang S L, Jin W et al. Ethane detection with mid-infrared hollow-core fiber photothermal spectroscopy[J]. Optics Express, 28, 38115-38126(2020).
[17] Zhao P C, Zhao Y, Bao H H et al. Mode-phase-difference photothermal spectroscopy for gas detection with an anti-resonant hollow-core optical fiber[J]. Nature Communications, 11, 847(2020).
