[1] Min WANG, Ying HUANG. Environmental pollution and economic growth in China. China Economic Quarterly, 14, 557-558(2015).

[2] Fahe CHAI, Yizhen CHEN, Yi WEN et al. Study on the technology and demonstration of regional air pollutant control. Research of Environmental Science, 19, 163-171(2006).

[3] Zhiguo RONG, Yuxiang ZHANG, Shiquan ZHONG et al. Sensitivity test of satellite fire detection and selection of new fire detection channel by remote sensing. Advances in Earth Science, 22, 866-871(2007).

[4] Meili DONG, Weixiong ZHAO, Yue CHENG et al. Application of broadband cavity enhanced absorption spectroscopy to trace gas detection and aerosol extinction coefficient measurement. Acta Physica Sinica, 61, 113-118(2012).

[5] Chenyu JIANG, Meixiu SUN, Yingxin LI et al. Development and future of laser spectroscopy in respiratory gas analysis. Chinese Journal of Lasers, 45, 191-199(2018).

[6] Xiao CHEN, Qingmei SUI, Fei MIAO et al. High sensitivity cavity enhanced absorption acetylene gas detection system. Optics and Precision Engineering, 20, 9-16(2012).

[7] Qiulian PENG, Manhua LI. Research progress of laser spectral gas analysis technology in medical diagnosis. Applied Laser, 28, 341-344(2008).

[8] Luo HAN, Hua XIA, Fengzhong DONG et al. Research progress and application of cavity enhanced absorption spectroscopy. Chinese Journal of Lasers, 45, 37-48(2018).

[9] A O'KEEFE. Integrated cavity output analysis of ultra-weak absorption. Chemical Physics Letters, 293, 331-336(1998).

[10] H CHEN, J WINDERLICH, C GERBIG et al. High-accuracy continuous airborne measurements of greenhouse gases (CO2 and CH4) using the cavity ring-down spectroscopy (CRDS) technique. Atmospheric Measurement Techniques, 3, 375-386(2010).

[11] Yunping MI, Xiaoping WANG, Shuyue ZHAN. Optical cavity ring-down spectroscopy and its application. Optical Instruments, 29, 85-89(2007).

[12] J M LANGRIDGE, T LAURILA, R S WATT et al. Cavity enhanced absorption spectroscopy of multiple trace gas species using a supercontinuum radiation source. Optics Express, 16, 10178-10188(2008).

[13] A O'KEEFE, J J SCHERER, J B PAUL. Cw integrated cavity output spectroscopy. Chemical Physics Letters, 307, 343-349(1999).

[14] J B PAUL, J J SCHERER, A O'KEEFE et al. Infrared cavity ringdown and integrated cavity output spectroscopy for trace species monitoring, 4577, 1-11(2002).

[15] D S BAER, J B PAUL, M GUPTA et al. Sensitive absorption measurements in the near-infrared region using off-axis integrated-cavity-output spectroscopy. Applied Physics B, 75, 261-265(2002).

[16] J B PAUL, L LAPSON, J G ANDERSON. Ultrasensitive absorption spectroscopy with a high-finesse optical cavity and off-axis alignment. Applied Optics, 40, 4904-4910(2001).

[17] X ZHU, G WANG, D QU. Integrated cavity output spectroscopy and its application in terms of trace gas detection, 10461, 188-198(2017).

[18] Yingming LIU, Jian WANG, Dahai YU et al. Integrated cavity output spectroscopy and its application. Optical Instruments, 31, 87-91(2009).

[19] Weixiong ZHAO. Integrated cavity output spectroscopy and its application(2008).

[20] P MADDALONI, G GAGLIARDI, P MALARA et al. Off-axis integrated-cavity-output spectroscopy for trace-gas concentration measurements: modeling and performance. Journal of the Optical Society of America B, 23, 1938-1945(2006).

[21] D HERRIOTT, H KOGELNIK, R KOMPFNER. Off-axis paths in spherical mirror interferometers. Applied Optics, 3, 523-526(1964).

[22] D HERRIOTT, H SCHULTE. Folded optical delay lines. Applied Optics, 4, 883-889(1965).

[23] R ENGELN, G BERDEN, R PEETERS et al. Cavity enhanced absorption and cavity enhanced magnetic rotation spectroscopy. Review of Scientific Instruments, 69, 3763-3769(1998).

[24] Xing CHAO, J JEFFRIES. Real-time, in situ, continuous monitoring of CO in a pulverized-coal-fired power plant with a 2.3 μm laser absorption sensor. Applied Physics B, 110, 359-365(2013).

[25] R CENTENO, J MANDON, S CRISTESCU et al. Three mirror off axis integrated cavity output spectroscopy for the detection of ethylene using a quantum cascade laser. Sensors & Actuators B Chemical, 203, 311-319(2014).

[26] N LANG, U MACHERIUS, H ZIMMERMANN et al. RES-Q-trace: a mobile CEAS-based demonstrator for multi-component trace gas detection in the MIR. Sensors, 18, 2058(2018).

[27] S FIEDLER, A HESE, A RUTH. Incoherent broad-band cavity-enhanced absorption spectroscopy of liquids. Review of Scientific Instruments, 76, 023107(2005).

[28] K ZHENG, C ZHENG, Y ZHANG et al. Review of Incoherent Broadband Cavity-Enhanced Absorption Spectroscopy (IBBCEAS) for gas sensing. Sensors, 18, 3646(2018).

[29] S BALL, R JONES. Broad-band cavity ring-down spectroscopy. Chemical Reviews, 103, 5239-5262(2003).

[30] A ALBERT, RUTH . Fourier-transform cavity-enhanced absorption spectroscopy using an incoherent broadband light source. Applied Optics, 46, 3611-3616(2007).

[31] J CHEN, D VENABLES. A broadband optical cavity spectrometer for measuring weak near-ultraviolet absorption spectra of gases. Atmospheric Measurement Techniques, 4, 425-436(2011).

[32] J THOMPSON, H SPANGLER. Tungsten source integrated cavity output spectroscopy for the determination of ambient atmospheric extinction coefficient. Applied Optics, 45, 2465-2473(2006).

[33] S BALL, J LANGRIDGE, R JONES. Broadband cavity enhanced absorption spectroscopy using light emitting diodes. Chemical Physics Letters, 398, 68-74(2004).

[34] J LANGRIDGE, S BALL, R JONES. A compact broadband cavity enhanced absorption spectrometer for detection of atmospheric NO2 using light emitting diodes. Analyst, 131, 916-922(2006).

[35] J LANGRIDGE, S BALL, A SHILLINGS et al. A broadband absorption spectrometer using light emitting diodes for ultrasensitive, in situ trace gas detection. Review of Scientific Instruments, 79, 123110(2008).

[36] T GHERMAN, D VENABLES, S VAUGHAN et al. Incoherent broadband cavity-enhanced absorption spectroscopy in the near-ultraviolet: application to HONO and NO2. Environmental Science & Technology, 42, 890-895(2008).

[37] T WU, W ZHAO, W CHEN et al. Incoherent broadband cavity enhanced absorption spectroscopy for in situ measurements of NO2 with a blue light emitting diode. Applied Physics B, 94, 85-94(2009).

[38] Liuyi LING, Yin WEI, Yourui HUANG et al. Study on the calibration method of atmospheric NO2 measured by broadband cavity enhanced absorption spectroscopy. Spectroscopy and Spectral Analysis, 38, 670-675(2018).

[39] Liuyi LING, Pinhua XIE, Min QIN et al. Measurement of atmospheric NO2 by open optical path incoherent broadband cavity enhanced absorption spectroscopy. Acta Optica Sinica, 33, 0130002(2012).

[40] Jun DUAN, Min QIN, Wu FANG et al. Application of incoherent broadband cavity enhanced absorption spectroscopy to the measurement of nitrous acid in atmosphere. Chinese Journal of Physics, 64, 226-233(2015).

[41] T WU, Q ZHA, W CHEN et al. Development and deployment of a cavity enhanced UV-LED spectrometer for measurements of atmospheric HONO and NO2 in Hong Kong. Atmospheric Environment, 95, 544-551(2014).

[42] R WASHENFELDER, A LANGFORD, H FUCHS et al. Measurement of glyoxal using an incoherent broadband cavity enhanced absorption spectrometer. Atmospheric Chemistry and Physics, 8, 7779-7793(2008).

[43] Liuyi LING, Min QIN, Pinhua XIE et al. Detection of HONO and NO2 by incoherent broadband cavity enhanced absorption spectroscopy based on LED light source. Acta Physica Sinica, 61, 98-104(2012).

[44] Xiaodong YANG, Zhengdeng LI, Huiling LI et al. Influence of incident and outgoing slit width of grating spectrometer on the width of measured spectral line. Journal of Jiayin University, 26, 38-41(2008).

[45] M THORPE, J YE. Cavity-enhanced direct frequency comb spectroscopy. Applied Physics B, 91, 397-414(2008).

[46] M KAUFMANN, F OLSCHEWSKI, K MANTEL et al. On the assembly and calibration of a spatial heterodyne interferometer for limb sounding of the middle atmosphere. CEAS Space Journal, 11, 525-531(2019).

[47] T LAURILA, R WATT, C KAMINSKI. Broadband cavity enhanced trace sensing using supercontinuum light sources, LMB2(2010).

[48] Zhengmao XIE. Research on Key technologies of near-infrared Polarization interferometer(2015).

[49] J CHEN, D WANG, A RAMACHANDRAN et al. An open-path dual-beam laser spectrometer for path-integrated urban NO2 sensing. Sensors and Actuators A: Physical, 315, 112208(2020).

[50] L CIAFFONI, G HANCOCK, J HARRISON et al. Demonstration of a mid-infrared cavity enhanced absorption spectrometer for breath acetone detection. Analytical Chemistry, 85, 846-850(2013).

[51] S CUNDIFF, J YE. Colloquium: femtosecond optical frequency combs. Reviews of Modern Physics, 75, 325(2003).

[52] F ADLER, M THORPE, K COSSEL et al. Cavity-enhanced direct frequency comb spectroscopy: technology and applications. Annual Review of Analytical Chemistry, 3, 175(2010).

[53] P GRIFFITHS, J DE HASETH. Fourier transform infrared spectrometry(2007).

[54] A FOLTYNOWICZ, T BAN, P MASŁOWSKI et al. Quantum-noise-limited optical frequency comb spectroscopy. Physical Review Letters, 107, 233002(2011).

[55] S SCHILLER. Spectrometry with frequency combs. Optics Letters, 27, 766-768(2002).

[56] A FLEISHER, D LONG, Z REED et al. Coherent cavity-enhanced dual-comb spectroscopy. Optics Express, 24, 10424-10434(2016).

[57] N HOGHOOGHI, R WRIGHT, A MAKOWIECKI et al. Broadband coherent cavity-enhanced dual-comb spectroscopy. Optica, 6, 28-33(2019).

[58] B BERNHARDT, A OZAWA, P JACQUET et al. Cavity-enhanced dual-comb spectroscopy. Nature photonics, 4, 55-57(2010).

[59] M SHIRASAKI. Large angular dispersion by a virtually imaged phased array and its application to a wavelength demultiplexer. Optics Letters, 21, 366-368(1996).

[60] K IWAKUNI, T BUI, J NIEDERMEYER et al. Comb-resolved spectroscopy with immersion grating in long-wave infrared. Optics Express, 27, 1911-1921(2019).

[61] S SCHOLTEN, J ANSTIE, N HÉBERT et al. Complex direct comb spectroscopy with a virtually imaged phased array. Optics Letters, 41, 1277-1280(2016).

[62] A JOHANSSON, R LUCILE, F ANNA et al. Broadband calibration-free cavity-enhanced complex refractive index spectroscopy using a frequency comb. Optics Express, 26, 20633-20648(2018).

[63] S FIEDLER, A HESE, A RUTH. Incoherent broad-band cavity-enhanced absorption spectroscopy. Chemical Physics Letters, 371, 284-294(2003).

[66] Yaxin SU, Yuru MAO, Zhang XU. Nitrogen oxide emission control technology from coal burning(2005).

[67] Jiming HAO, Guangda MA, Ke YU et al. Air pollution control project(1989).

[68] Liping WANG, Jianping CHEN. Air pollution control engineering(2002).

[69] Shuaixi LIANG, Min QIN, Jun DUAN et al. Airborne cavity enhanced absorption spectroscopy for high time resolution measurements of atmospheric NO2. Acta Physica Sinica, 66, 090704(2017).

[70] R WASHENFELDER, A ATTWOOD, J FLORES et al. Broadband cavity-enhanced absorption spectroscopy in the ultraviolet spectral region for measurements of nitrogen dioxide and formaldehyde. Atmospheric Measurement Techniques, 9, 41-52(2016).

[71] O KENNEDY, B OUYANG, J LANGRIDGE et al. An aircraft based three channel broadband cavity enhanced absorption spectrometer for simultaneous measurements of NO3, N2O5 and NO2. Atmospheric Measurement Techniques, 4, 1759-1776(2011).

[72] S BALL, J LANGRIDGE, R JONES. Broadband cavity enhanced absorption spectroscopy using light emitting diodes. Chemical Physics Letters, 398, 68-74(2004).

[73] D VENABLES, T GHERMAN, J ORPHAL et al. High sensitivity in situ monitoring of NO3 in an atmospheric simulation chamber using incoherent broadband cavity-enhanced absorption spectroscopy. Environmental Science & Technology, 40, 6758-6763(2006).

[74] Y HONG, J LIM, J CHOI et al. Measurement of nitrogen dioxide and nitric oxide densities by using CEAS (cavity‐enhanced absorption spectroscopy) in nonthermal atmospheric pressure air plasma. Plasma Processes and Polymers, 18, 1-8(2021).

[75] H WANG, J CHEN, K LU. Development of a portable cavity-enhanced absorption spectrometer for the measurement of ambient NO3 and N2O5: experimental setup, lab characterizations, and field applications in a polluted urban environment. Atmospheric Measurement Techniques, 10, 1465-1479(2017).

[76] Y NAKASHIMA, Y SADANAGA. Validation of in situ measurements of atmospheric nitrous acid using incoherent broadband cavity-enhanced absorption spectroscopy. Analytical Sciences, 33, 519-524(2017).

[77] C AMIOT, A AALTO, P RYCZKOWSKI et al. Cavity enhanced absorption spectroscopy in the mid-infrared using a supercontinuum source. Applied Physics Letters, 111, 061103(2017).

[78] J DANG, L KONG, C ZHENG et al. An open-path sensor for simultaneous atmospheric pressure detection of CO and CH4 around 2.33 μm. Optics and Lasers in Engineering, 123, 1-7(2019).

[79] D VENABLES, T GHERMAN, J ORPHAL et al. High sensitivity in situ monitoring of NO3 in an atmospheric simulation chamber using incoherent broadband cavity-enhanced absorption spectroscopy. Environmental Science & Technology, 40, 6758-6763(2006).

[80] R VARMA, D VENABLES, A RUTH et al. Long optical cavities for open-path monitoring of atmospheric trace gases and aerosol extinction. Applied Optics, 48, 159-171(2009).

[81] H YI, T WU, G WANG et al. Sensing atmospheric reactive species using light emitting diode by incoherent broadband cavity enhanced absorption spectroscopy. Optics Express, 24, 781-790(2016).

[82] N JORDAN, C YE, S GHOSH et al. A broadband cavity-enhanced spectrometer for atmospheric trace gas measurements and Rayleigh scattering cross sections in the cyan region (470-540 nm). Atmospheric Measurement Techniques, 12, 1277-1293(2019).

[83] C AMIOT, A ALTO, P RYCZKOWSKI et al. Cavity enhanced absorption spectroscopy in the mid-infrared using a supercontinuum source. Applied Physics Letters, 111, 1-4(2017).

[84] J AXSON, R WASHENFELDER, T KAHAN et al. Absolute ozone absorption cross section in the Huggins Chappuis minimum (350-470 nm) at 296 K. Atmospheric Chemistry and Physics, 11, 11581-11590(2011).

[85] J ORPHAL, A RUTH. High-resolution Fourier-transform cavity-enhanced absorption spectroscopy in the near-infrared using an incoherent broad-band light source. Optics Express, 16, 19232-19243(2008).

[86] R S WATT, T LAURILA, C KAMINSKI et al. Cavity enhanced spectroscopy of high-temperature H2O in the near-infrared using a supercontinuum light source. Applied Spectroscopy, 63, 1389-1395(2009).

[87] C DENG, W ZHANG, J ZHANG et al. Rapid determination of acetone in human plasma by gas chromatography-mass spectrometry and solid-phase microextraction with on-fiber derivatization. Journal of Chromatography B, 805, 235-240(2004).

[88] C WANG, S SCHERRER, D HOSSAIN. Measurements of cavity ringdown spectroscopy of acetone in the ultraviolet and near-infrared spectral regions: potential for development of a breath analyzer. Applied Spectroscopy, 58, 784-791(2004).

[89] Kejing YING, Qiang HUANG. Application of respiratory gas detection in early diagnosis of lung cancer. International Respiratory Journal, 26, 143-145(2006).

[90] M MCCURDY, Y BAKHIRKIN, G WYSOCKI et al. Recent advances of laser-spectroscopy-based techniques for applications in breath analysis. Journal of Breath Research, 1, 014001(2007).

[91] Minming TONG, Ying WANG, Jiao LI et al. Study on new acetone analyzer. Instrument Technique and Sensor, 16-17(2007).

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

[93] C WANG, A MBI, M SHEPHERD. A study on breath acetone in diabetic patients using a cavity ringdown breath analyzer: exploring correlations of breath acetone with blood glucose and glycohemoglobin A1C. IEEE Sensors Journal, 10, 54-63(2010).

[94] L LIN, H DONG, F WANG et al. Progress in technology and equipment of exhaled breath detection. China Medical Devices, 31, 23-29(2016).

[95] A AMANN, W MIEKISCH, J SCHUBERT et al. Analysis of exhaled breath for disease detection. Annual Review of Analytical Chemistry, 7, 455-482(2014).

[96] C JIANG, M SUN, Z WANG et al. A portable real-time ringdown breath acetone analyzer: toward potential diabetic screening and management. Sensors, 16, 1199-1213(2016).

[97] M SUN, Z CHEN, Z GONG et al. Determination of breath acetone in 149 Type 2 diabetic patients using a ringdown breath-acetone analyzer. Analytical & Bioanalytical Chemistry, 407, 1641-1650(2015).

[98] P KAMAT, C ROLLER, K NAMJOU et al. Measurement of acetaldehyde in exhaled breath using a laser absorption spectrometer. Applied Optics, 46, 3969-3975(2007).

[99] C WANG, A SURAMPUDI. An acetone breath analyzer using cavity ringdown spectroscopy: an initial test with human subjects under various situations. Measurement Science and Technology, 19, 105604(2008).

[100] J MANNE, W JÄGER, J TULIP. Sensitive detection of ammonia and ethylene with a pulsed quantum cascade laser using intra and interpulse spectroscopic techniques. Applied Physics B, 94, 337-344(2009).

[101] K MOSKALENKO, A NADEZHDINSKII, I ADAMOVSKAYA. Human breath trace gas content study by tunable diode laser spectroscopy technique. Infrared Physics & Technology, 37, 181-192(1996).

[102] Z LUO, Z TAN, X LONG. Application of near-infrared optical feedback cavity enhanced absorption spectroscopy (OF-CEAS) to the detection of ammonia in exhaled human breath. Sensors, 19, 3686-3696(2019).

[103] M THORPE, D BALSLEV-CLAUSEN, M KIRCHNER et al. Cavity-enhanced optical frequency comb spectroscopy: application to human breath analysis. Optics Express, 16, 2387-2397(2008).

[104] E CROSSON, K RICCI, B RICHMAN et al. Stable isotope ratios using cavity ring-down spectroscopy: determination of 13C/12C for carbon dioxide in human breath. Analytical Chemistry, 74, 2003-2007(2002).

[105] K PARAMESWARAN, D ROSEN, M ALLEN et al. Off-axis integrated cavity output spectroscopy with a mid-infrared interband cascade laser for real-time breath ethane measurements. Applied Optics, 48, B73-B79(2009).

[106] D BAER, J PAUL, M GUPTA et al. Sensitive absorption measurements in the near-infrared region using off-axis integrated-cavity-output spectroscopy. Applied Physics B, 75, 261-265(2002).

[107] J WANG, W ZHANG, L LI et al. Breath ammonia detection based on tunable fiber laser photoacoustic spectroscopy. Applied Physics B, 103, 263-269(2011).

[108] I BAYRAKLI, H AKMAN, F SARI. High-sensitivity biomedical sensor based on photoacoustic and cavity enhanced absorption spectroscopy with a new software platform for breath analysis. Applied Optics, 60, 2093-2099(2021).

[109] B PANDA, A PAL, S CHAKRABORTY et al. An EC-QCL based dual-species (CH4/N2O) detection method at 7.8 µm in mid-IR region for simultaneous applications of atmospheric monitoring and breath diagnostics. Infrared Physics & Technology, 125, 104261(2022).

[110] Q LIANG, Y CHAN, P CHANGALA et al. Ultrasensitive multispecies spectroscopic breath analysis for real-time health monitoring and diagnostics. Proceedings of the National Academy of Sciences, 118, e2105063118(2021).

[111] Q LIANG, Y CHAN, J TOSCANO et al. Frequency comb and machine learning-based breath analysis for COVID-19 classification. arXiv preprint(2022).

[112] R HANSON. Applications of quantitative laser sensors to kinetics, propulsion and practical energy systems. Proceedings of the Combustion Institute, 33, 1-40(2011).

[113] D DAVIDSON, R HANSON. Recent advances in shock tube/laser diagnostic methods for improved chemical kinetics measurements. Shock Waves, 19, 271-283(2009).

[114] S WANG, S LI, D DAVIDSON et al. Shock tube measurement of the high-temperature rate constant for OH+CH3→products. The Journal of Physical Chemistry A, 119, 8799-8805(2015).

[115] J WHITE. Long optical paths of large aperture. JOSA, 32, 285-288(1942).

[116] D HERRIOTT, H KOGELNIK, R KOMPFNER. Off-axis paths in spherical mirror interferometers. Applied Optics, 3, 523-526(1964).

[117] E MOYER, D SAYRES, G ENGEL et al. Design considerations in high-sensitivity off-axis integrated cavity output spectroscopy. Applied Physics B, 92, 467-474(2008).

[118] P FJODOROW, M FIKRI, C SCHULZ et al. Time-resolved detection of temperature, concentration, and pressure in a shock tube by intracavity absorption spectroscopy. Applied Physics B, 122, 1-9(2016).

[119] K SUN, S WANG, R SUR et al. Time-resolved in situ detection of CO in a shock tube using cavity-enhanced absorption spectroscopy with a quantum-cascade laser near 4.6 µm. Optics Express, 22, 24559-24565(2014).

[120] S WANG, K SUN, D DAVIDSON et al. Shock-tube measurement of acetone dissociation using cavity-enhanced absorption spectroscopy of CO. The Journal of Physical Chemistry A, 119, 7257-7262(2015).

[121] S WANG, D DAVIDSON, R HANSON. Shock Tube measurement for the dissociation rate constant of acetaldehyde using sensitive CO diagnostics. The Journal of Physical Chemistry A, 120, 6895-6901(2016).

[122] M NATIONS, S WANG, C GOLDENSTEIN et al. Shock-tube measurements of excited oxygen atoms using cavity-enhanced absorption spectroscopy. Applied Optics, 54, 8766-8775(2015).

[123] S WANG, D DAVIDSON, R HANSON. Improved shock tube measurement of the CH4+Ar=CH3+H+Ar rate constant using UV cavity-enhanced absorption spectroscopy of CH3. The Journal of Physical Chemistry A, 120, 5427-5434(2016).

[124] S WANG, D DAVIDSON, J JEFFRIES et al. Time-resolved sub-ppm CH3 detection in a shock tube using cavity-enhanced absorption spectroscopy with a ps-pulsed UV laser. Proceedings of the Combustion Institute, 36, 4549-4556(2017).

[125] M MHANNA, M SY, A ELKHAZRAJI et al. Laser-based sensor for multi-species detection using ceas and dnn, 1-2(2022).

[126] A MATSUGI. Thermal decomposition of benzyl radicals: kinetics and spectroscopy in a shock tube. The Journal of Physical Chemistry A, 124, 824-835(2020).

[127] J PELTOLA, P SEAL, N VUORIO et al. Solving the discrepancy between the direct and relative-rate determinations of unimolecular reaction kinetics of dimethyl-substituted Criegee intermediate (CH3)2COO using a new photolytic precursor. Physical Chemistry Chemical Physics, 24, 5211-5219(2022).