[1] Du Z H, Han R Y, Wang X Y et al. Interband cascade lasers based trace gas sensing: a review[J]. Chinese Journal of Lasers, 45, 0911006(2018).

[2] Lian J X, Zhou B, Wang Y H et al. Measurement of gas concentration under strong interference by frequency multiplexing based on high-frequency reference signal[J]. Acta Optica Sinica, 40, 1630001(2020).

[3] Wang X P, Peng D, Li J S et al. Two-dimensional reconstruction of combustion flow field using wavelength-modulated absorption spectra[J]. Chinese Journal of Lasers, 48, 0711002(2021).

[4] Liang Y, Liu T G, Liu K et al. Optimized gas detection method based on variational mode-decomposition algorithm[J]. Chinese Journal of Lasers, 48, 0706003(2021).

[5] Ma F X, Tian Y, Chen K et al. Technique for detection of dissolved gas in oil based on miniature photoacoustic sensor[J]. Acta Optica Sinica, 40, 0730003(2020).

[6] Wang Z H, Fu P F, Chao X. Laser absorption sensing systems: challenges, modeling, and design optimization[J]. Applied Sciences, 9, 2723(2019).

[7] Wang Y H, Zhou B, Liu C. Sensitivity and accuracy enhanced wavelength modulation spectroscopy based on PSD analysis[J]. IEEE Photonics Technology Letters, 33, 1487-1490(2021).

[8] Li H J, Rieker G B, Liu X et al. Extension of wavelength-modulation spectroscopy to large modulation depth for diode laser absorption measurements in high-pressure gases[J]. Applied Optics, 45, 1052-1061(2006).

[9] Rieker G B, Jeffries J B, Hanson R K. Calibration-free wavelength-modulation spectroscopy for measurements of gas temperature and concentration in harsh environments[J]. Applied Optics, 48, 5546-5560(2009).

[10] Sun K, Chao X, Sur R et al. Wavelength modulation diode laser absorption spectroscopy for high-pressure gas sensing[J]. Applied Physics B, 110, 497-508(2013).

[11] Sun K, Chao X, Sur R et al. Analysis of calibration-free wavelength-scanned wavelength modulation spectroscopy for practical gas sensing using tunable diode lasers[J]. Measurement Science and Technology, 24, 125203(2013).

[12] Goldenstein C S, Spearrin R M, Hanson R K. Fiber-coupled diode-laser sensors for calibration-free stand-off measurements of gas temperature, pressure, and composition[J]. Applied Optics, 55, 479-484(2016).

[13] Liu C, Xu L J. Laser absorption spectroscopy for combustion diagnosis in reactive flows: a review[J]. Applied Spectroscopy Reviews, 54, 1-44(2019).

[14] Goldenstein C S, Strand C L, Schultz I A et al. Fitting of calibration-free scanned-wavelength-modulation spectroscopy spectra for determination of gas properties and absorption lineshapes[J]. Applied Optics, 53, 356-367(2014).

[15] Chen W, Wu Y, Luo Y. Broadening-independent demodulation for wavelength modulation spectroscopy based on even-order harmonics[J]. Spectroscopy Letters, 51, 61-66(2018).

[16] Wang Y H, Zhou B, Liu C. Calibration-free wavelength modulation spectroscopy based on even-order harmonics[J]. Optics Express, 29, 26618-26633(2021).

[17] Liu Y Y, Lin J L, Huang G M et al. Simple empirical analytical approximation to the Voigt profile[J]. Journal of the Optical Society of America B, 18, 666-672(2001).

[18] Arndt R. Analytical line shapes for lorentzian signals broadened by modulation[J]. Journal of Applied Physics, 36, 2522-2524(1965).

[19] Kluczynski P, Lindberg Å M, Axner O. Wavelength modulation diode laser absorption signals from Doppler broadened absorption profiles[J]. Journal of Quantitative Spectroscopy and Radiative Transfer, 83, 345-360(2004).

[20] Hanson R K, Spearrin R M, Goldenstein C S[M]. Spectroscopy and optical diagnostics for gases(2016).

[21] Gamache R R, Kennedy S, Hawkins R et al. Total internal partition sums for molecules in the terrestrial atmosphere[J]. Journal of Molecular Structure, 517/518, 407-425(2000).

[22] Wang Y T, Cai H W, Geng J X et al. Logarithmic conversion of absorption detection in wavelength modulation spectroscopy with a current-modulated diode laser[J]. Applied Optics, 48, 4068-4076(2009).

[23] Cong M L, Sun D D. Detection of harmonics and recovery of the absorption line profile using logarithmic-transformed wavelength modulation spectroscopy[J]. Optical Engineering, 55, 076119(2016).

[24] Cong M L, Sun D D, Wang Y D. Application of logarithmic transformed-wavelength modulation spectroscopy in gas detection[J]. Infrared and Laser Engineering, 46, 0223001(2017).

[25] Li S M, Sun L Q. Natural logarithm wavelength modulation spectroscopy[J]. Chinese Optics Letters, 19, 031201(2021).

[26] Gordon I E, Rothman L S, Hargreaves R J et al. The HITRAN2020 molecular spectroscopic database[J]. Journal of Quantitative Spectroscopy and Radiative Transfer, 277, 107949(2022).