[1] [1] HANF S, BGZI T, KEINER R, et al. Fast and highly sensitive fiber-enhanced Raman spectroscopic monitoring of molecular H2 and CH4 for point-of-care diagnosis of malabsorption disorders in exhaled human breath［J］. Analytical Chemistry, 2015, 87(2):982-988.

[2] [2] BURIC M P, CHEN K, FALK J, et al. Raman sensing of fuel gases using a reflective coating capillary optical fiber［J］.Proceedings of the SPIE,2009, 7316:731608 .

[3] [3] KEINER R, HERRMANN M, KSEL K, et al. Rapid monitoring of intermediate states and mass balance of nitrogen during denitrification by means of cavity enhanced Raman multi-gas sensing［J］. Analytica Chimica Acta, 2015, 864:39-47.

[4] [4] FRISS A J, LIMBACH C M, YALIN A P. Cavity-enhanced rotational Raman scattering in gases using a 20mW near-infrared fiber laser［J］.Optics Letters,2016, 41(14):3193-3196.

[5] [5] LI X, XIA Y, ZHAN L, et al. Near-confocal cavity-enhanced Raman spectroscopy for multitrace-gas detection.［J］. Optics Letters, 2008, 33(18):2143-2145.

[6] [6] KING D A, PITTARO R J . Simple diode pumping of a power-buildup cavity［J］. Optics Letters, 1998, 23(10):774-776.

[7] [7] OHARA S, YAMAGUCHI S, ENDO M, et al. Performance characteristics of power build-up cavity for raman spectroscopic measurement［J］. Optical Review, 2003, 10(5):342-345.

[8] [8] SATO J, ENDO M, YAMAGUCHI S, et al. Simple annular-beam generator with a laser-diode-pumped axially off-set power build-up cavity［J］. Optics Communications, 2007, 277(2):342-348.

[9] [9] KEINER R, FROSCH T, HANF S, et al. Raman spectroscopy—an innovative and versatile tool to follow the respirational activity and carbonate biomineralization of important cave bacteria［J］. Analytical Chemistry, 2013, 85(18):8708-8714.

[10] [10] KEINER R, FROSCH T, MASSAD T, et al. Enhanced Raman multigas sensing—a novel tool for control and analysis of 13CO2 labeling experiments in environmental research［J］. Analyst, 2014, 139(16):3879-3884.

[11] [11] HIPPLER M. Cavity-enhanced Raman spectroscopy of natural gas with optical feedback CW-diode lasers［J］. Analytical Chemistry, 2015, 87(15):7803-7809.

[12] [12] SALTER R, CHU J, HIPPLER M. Cavity-enhanced Raman spectroscopy with optical feedback CW diode lasers for gas phase analysis and spectroscopy［J］. The Analyst, 2012, 137(20):4669-4676.

[13] [13] HIPPLER M, MOHR C, KEEN K A, et al. Cavity-enhanced resonant photoacoustic spectroscopy with optical feedback CW diode lasers: A novel technique for ultratrace gas analysis and high-resolution spectroscopy［J］. Journal of Chemical Physics, 2010, 133(4):044308.

[14] [14] ZUO D L, YU A L, LI Z, et al. Application of imaging spectrometer in gas analysis by Raman scattering［J］. Proceedings of the SPIE,2015, 9611:96110N .

[15] [15] DAHMANI B, HOLLBERG L, DRULLINGER R. Frequency stabilization of semiconductor lasers by resonant optical feedback［J］. Optics Letters, 1987, 12(11):876-878.

[16] [16] LAURENT P, CLAIRON A, BRANT C. Frequency noise analysis of optically self-locked diode lasers［J］. IEEE Journal of Quantum Electronics, 1989, 25(6):1131-1142.

[17] [17] LEWOCZKO-ADAMCZYK W, PYRLIK C, HGER J, et al. Ultra-narrow linewidth DFB-laser with optical feedback from a monolithic confocal Fabry-Perot cavity［J］. Optics Express, 2015, 23(8):9705-9709.