[1] Sun X L, Zhang X H, Cao X W. The diagnostic value of fractional exhaled nitric oxide in bronchial asthma and its relationship with disease severity[J]. China Medical Herald, 17, 82-85(2020).

[2] Chen L C, Wu L L, Lu D Z et al. The value of fractional exhaled nitric oxide and impulse oscillometric and spirometric parameters for predicting bronchial hyperresponsiveness in adults with chronic cough[J]. Journal of Asthma and Allergy, 14, 1065-1073(2021).

[4] Tiotiu A. Biomarkers in asthma: state of the art[J]. Asthma Research and Practice, 4, 10(2018).

[5] Paro-Heitor M L Z, Bussamra M H C F, Saraiva-Romanholo B M et al. Exhaled nitric oxide for monitoring childhood asthma inflammation compared to sputum analysis, serum interleukins and pulmonary function[J]. Pediatric Pulmonology, 43, 134-141(2008).

[6] Maniscalco M, Vitale C, Vatrella A et al. Fractional exhaled nitric oxide-measuring devices: technology update[J]. Medical Devices, 9, 151-160(2016).

[7] Cristescu S M, Mandon J, Harren F J M et al. Methods of NO detection in exhaled breath[J]. Journal of Breath Research, 7, 017104(2013).

[8] Wang C J, Sahay P. Breath analysis using laser spectroscopic techniques: breath biomarkers, spectral fingerprints, and detection limits[J]. Sensors, 9, 8230-8262(2009).

[9] Borrill Z, Clough D, Truman N et al. A comparison of exhaled nitric oxide measurements performed using three different analysers[J]. Respiratory Medicine, 100, 1392-1396(2006).

[10] Mandon J, Högman M, Merkus P J F M et al. Exhaled nitric oxide monitoring by quantum cascade laser: comparison with chemiluminescent and electrochemical sensors[J]. Journal of Biomedical Optics, 17, 017003(2012).

[11] Dunlea E J, Herndon S C, Nelson D D et al. Evaluation of nitrogen dioxide chemiluminescence monitors in a polluted urban environment[J]. Atmospheric Chemistry and Physics, 7, 2691-2704(2007).

[12] Wany A, Gupta A K, Kumari A et al. Chemiluminescence detection of nitric oxide from roots, leaves, and root mitochondria[J]. Methods in Molecular Biology, 1424, 15-29(2016).

[13] Menou A, Babeanu D, Paruit H N et al. Normal values of offline exhaled and nasal nitric oxide in healthy children and teens using chemiluminescence[J]. Journal of Breath Research, 11, 036008(2017).

[14] Brooks C R, Brogan S B M, van Dalen C J et al. Measurement of exhaled nitric oxide in a general population sample: a comparison of the Medisoft HypAir FENO and Aerocrine NIOX analyzers[J]. The Journal of Asthma, 48, 324-328(2011).

[15] Mandon J, Högman M, Merkus P J F M et al. Quantum cascade laser for breath analysis: application to nitric oxide monitoring[C], LM3B.6(2012).

[16] Xu J, Li Y F, Cheng Y et al. Development of methane leakage telemetry system based on TDLAS-WMS[J]. Laser & Optoelectronics Progress, 60, 0628006(2023).

[17] Xin W H, Ren Z Y, Fan J X et al. Design and implementation of a field programmable gate array-based signal control system for tunable diode laser absorption spectroscopy-wavelength modulation spectroscopy[J]. Laser & Optoelectronics Progress, 60, 0530001(2023).

[18] Wang X, Jing C R, Hou K X et al. Online detection of human-exhaled end-tidal carbon dioxide using tunable semiconductor absorption spectroscopy[J]. Chinese Journal of Lasers, 47, 0311002(2020).

[19] Wang X, Gao G Z, Long F Y et al. CO volume fraction measurement based on wavelength modulated cavity-enhanced absorption spectroscopy[J]. Chinese Journal of Lasers, 50, 1311001(2023).

[20] Li M Y, Wang F, Zhang Y Q. Measurement of nitric oxide with low concentration based on mid-infrared laser absorption spectroscopy[J]. Laser & Optoelectronics Progress, 55, 053002(2018).

[21] Spagnolo V, Lewicki R, Dong L et al. Quantum-cascade-laser-based optoacoustic detection for breath sensor applications[C], 332-335(2011).

[22] Ai Y K, Li J, Li Q Y et al. Cavity ringdown spectroscopy of nitric oxide in the ultraviolet region for human breath test[J]. Journal of Breath Research, 14, 037101(2020).

[23] Namjou K, Roller C B, Reich T E et al. Determination of exhaled nitric oxide distributions in a diverse sample population using tunable diode laser absorption spectroscopy[J]. Applied Physics B, 85, 427-435(2006).

[24] Liu Y H, Ma Y F. Advances in multipass cell for absorption spectroscopy-based trace gas sensing technology[J]. Chinese Optics Letters, 21, 033001(2023).

[25] Xin Z. Diode laser absorption sensors for combustion control[D](2005).

[26] Kluczynski P, Gustafsson J, Lindberg Å M et al. Wavelength modulation absorption spectrometry: an extensive scrutiny of the generation of signals[J]. Spectrochimica Acta Part B: Atomic Spectroscopy, 56, 1277-1354(2001).

[27] Zhou S, Han Y L, Li B C. Pressure optimization of an EC-QCL based cavity ring-down spectroscopy instrument for exhaled NO detection[J]. Applied Physics B, 124, 27(2018).

[28] 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).

[29] McCurdy M R, Bakhirkin Y A, Wysocki G et al. Performance of an exhaled nitric oxide and carbon dioxide sensor using quantum cascade laser-based integrated cavity output spectroscopy[J]. Journal of Biomedical Optics, 12, 034034(2007).

[30] Petralia L S, Bahl A, Peverall R et al. Accurate real-time FENO expirograms using complementary optical sensors[J]. Journal of Breath Research, 14, 047102(2020).