[1] Feng S, Qiu X, Guo G, et al. Palm-sized laser spectrometer with high robustness and sensitivity for trace gas detection using a novel double-layer Toroidal cell[J]. Analytical Chemistry, 2021, 93(10): 4552-4558.
[2] Cui R Y, Dong L, Wu H P, et al. Three dimensional printed miniature fiber-coupled multipass cells with dense spot patterns for ppb-level methane detection using a near-IR diode laser[J]. Analytical Chemistry, 2020, 92(19): 13034-13041.
[3] Cui R Y, Wu H P, Dong L, et al. Multiple-sound-source-excitation quartz-enhanced photo acoustic spectroscopy based on a single-line spot pattern multi-pass cell[J]. Applied Physics Letters, 2021, 118(16): 161101.
[4] Risby T H, Tittel F K. Current status of midinfrared quantum and interband cascade lasers for clinical breath analysis[J]. Optical Engineering, 2010, 49(11): 111123.
[5] Chang H, Feng S L, Qiu X B, et al. Implementation of the toroidal absorption cell with multi-layer patterns by a single ring surface[J]. Optics Letters, 2020, 45(21): 5897-5900.
[6] Gianella M, Sigrist M W. Infrared spectroscopy on smoke produced by cauterization of animal tissue[J]. Sensors, 2010, 10(4): 2694-2708.
[7] Liu K, Wang L, Tan T, et al. Highly sensitive detection of methane by near-infrared laser absorption spectroscopy using a compact dense-pattern multipass cell[J]. Sensors and Actuators B: Chemical, 2015, 220: 1000-1005.
[8] Dong L, Li C G, Sanchez N P, et al. Compact CH4 sensor system based on a continuous-wave, low power consumption, room temperature interband cascade laser[J]. Applied Physics Letters, 2016, 108(1): 011106.
[9] Dong L, Yu Y J, Li C G, et al. ppb-level formaldehyde detection using a CW room-temperature interband cascade laser and a miniature dense pattern multipass gas cell[J]. Optics Express, 2015, 23(15): 19821-19830.
[10] Dong L, Tittel F K, Li C, et al. Compact TDLAS based sensor design using interband cascade lasers for mid-IR trace gas sensing[J]. Optics Express, 2016, 24(6): A528-A535.
[11] Cui R Y, Dong L, Wu H P, et al. Calculation model of dense spot pattern multi-pass cells based on a spherical mirror aberration[J]. Optics Letters, 2019, 44(5): 1108-1111.
[12] Kong R, Sun T, Liu P, et al. Optical design and analysis of a two-spherical-mirror-based multipass cell[J]. Applied Optics, 2020, 59(6): 1545-1552.
[13] Kasyutich V L, Martin P A. Multipass optical cell based upon two cylindrical mirrors for tunable diode laser absorption spectroscopy[J]. Applied Physics B, 2007, 88(1): 125-130.
[14] Mcmanus J B, Kebabian P L, Zahniser M S. Astigmatic mirror multipass absorption cells for long-path-length spectroscopy[J]. Applied Optics, 1995: 34(18): 3336-3348.
[15] Ozharar S, Sennaroglu A. Mirrors with designed spherical aberration for multi-pass cavities[J]. Optics Letters, 2017, 42(10): 1935-1938.
[16] Tuzson B, Mangold M, Looser H, et al. Compact multipass optical cell for laser spectroscopy[J]. Optics Letters, 2013, 38(3): 257-259.
[17] Mangold M, Tuzson B, Hundt M, et al. Circular paraboloid reflection cell for laser spectroscopic trace gas analysis[J]. Journal of the Optical Society of America A-Optics Image Science and Vision, 2016, 33(5): 913-919.