Hollow waveguide enhanced dimethyl sulfide sensor based on a 3.3 μm interband cascade laser

Li, Jinyi; Luo, Gang; Du, Zhenhui; Ma, Yu

doi:10.1016/j.snb.2017.09.190

Cited by 24 publications

(19 citation statements)

References 30 publications

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“…As shown in the insert of Fig. 8, the response time τ r (10 27 -90%) of the concentration levels in rising and falling process 28 was about 2.7 s and 2.2 s, respectively, while the delay time τ d 29 (0 -10%) was approximately in the same time of 0.6 s [22]. 30…”

Section: Investigation Of Response Time and 9 Concentration Calibmentioning

confidence: 85%

Influence of Light Coupling Configuration and Alignment on the Stability of HWG-Based Gas Sensor System for Real-Time Detection of Exhaled Carbon Dioxide

Zhou

Zhang

et al. 2019

IEEE Sensors J.

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A mid-infrared tunable diode laser absorption 2 spectroscopy (TDLAS) gas sensor based on hollow waveguide 3 (HWG) gas cell for real-time exhaled carbon dioxide (eCO2) 4 detection is reported. A 2.73 μm distributed feedback (DFB) laser 5 was used to target a strong CO2 absorption line, and wavelength 6 modulation spectroscopy (WMS) with the second harmonic 7 (WMS-2ƒ) was used to retrieve the CO2 concentration with high 8 sensitivity. The influence of different parameters, including 9 coupling configuration of HWG, laser-to-HWG and 10 HWG-to-detector coupling alignment on the stability of the 11 HWG sensor is systematically studied. The HWG eCO2 sensor 12 showed a fast response time of 2.7s, detection limit of 17 ppmv, 13 and measurement precision of 20.9 ppmv with a 0.54 s temporal 14 resolution. The eCO2 concentrations changed in breath cycles 15 were measured in real time. The Allan variance indicated that 16 the detection limit can reach 1.7 ppmv, corresponding to a 17 detection sensitivity of 1.3×10-8 cm-1 Hz-1/2 , as the integration time 18 increases to 26 s. This work demonstrates the performance 19 characteristics and merits of HWG eCO2 sensor for exhaled 20 breath analysis and potential detection for other exhaled gases.

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Section: Investigation Of Response Time and 9 Concentration Calibmentioning

confidence: 85%

Influence of Light Coupling Configuration and Alignment on the Stability of HWG-Based Gas Sensor System for Real-Time Detection of Exhaled Carbon Dioxide

Zhou

Zhang

et al. 2019

IEEE Sensors J.

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“…DFB-ICLs provide single mode, narrow linewidth (~0.7 MHz) [62], low power consumption (hundreds of milliwatts), a compact system solution, and RT-cw emission in the 3-6 µm range, which fill the MIR gap perfectly. DFB-ICLs have been used for the ppb-level detection of many important gases, especially hydrocarbon species [63][64][65][66][67][68][69], which leads to many important applications in various areas, for example, clinical diagnostics [70,71], combustion probing [72], environmental monitoring [73,74], and remote sensing.…”

Section: Interband Cascade Lasersmentioning

confidence: 99%

“…Recently, new types of gas cells have been developed to achieve long optical path in a smaller volume, including modified MPCs [111][112][113][114][115][116], circular multi-reflection (CMR) cells [117][118][119][120][121][122][123][124], and HWG [32,63,69,[125][126][127][128]. Guo and Sun reviewed the progress in modified MPCs and CMR cells and compared them in terms of optical pathlength (OPL), volume, and path-to-volume ratio (PVR) [116].…”

Section: New Types Of Gas Cellsmentioning

confidence: 99%

“…Modified MPCs There are three categories of HWG employed in spectroscopic gas sensing, namely Ag/AgI-coated HWG (Ag/AgI-HWG), photonic bandgaps HWG (PBG-HWG), and iHWG [131], and the comparison of them is as shown in Table 1. HWGs work as both an optical waveguide and gas transmission cell that provide an extended OPL yielding high sensitivity measurements [69]. It is worth noting that filling PBG-HWG with analyte gas for sensing is difficult owing to the considerable back-pressure building up in the hollow structure.…”

Section: Opl/m Volume/l Pvr/m/l Ads Dadsmentioning

confidence: 99%

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Mid-Infrared Tunable Laser-Based Broadband Fingerprint Absorption Spectroscopy for Trace Gas Sensing: A Review

Zhang

et al. 2019

Applied Sciences

Self Cite

116

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The vast majority of gaseous chemical substances exhibit fundamental rovibrational absorption bands in the mid-infrared spectral region (2.5–25 μm), and the absorption of light by these fundamental bands provides a nearly universal means for their detection. A main feature of optical techniques is the non-intrusive in situ detection of trace gases. We reviewed primarily mid-infrared tunable laser-based broadband absorption spectroscopy for trace gas detection, focusing on 2008–2018. The scope of this paper is to discuss recent developments of system configuration, tunable lasers, detectors, broadband spectroscopic techniques, and their applications for sensitive, selective, and quantitative trace gas detection.

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“…The NIST 69 Databasis [17] and the Pacific Northwest National Laboratory [18] spectral database allow us to visualize the low resolution gas phase spectra for DMS between 500 and cm À1 . It is only this year that using the tunable laser absorption spectroscopy (TLAS) technique with an interband cascade laser at 3.3 µm, Li et al [19] shows the possibility of measuring DMS with a sensitivity of 20 ppb with time resolution of 1 s, and a measurement precision of 21 ppb, very similar to the chemical methods, and opening the door to a quantitative detection of DMS.…”

Section: Introductionmentioning

confidence: 99%

High resolution rovibrational analysis of dimethyl sulfide spectrum in the 10 µm atmospheric window combining supersonic jet-quantum cascade laser and FTIR spectroscopies

Jabri

Belkhodja

Berger

et al. 2018

Journal of Molecular Spectroscopy

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The rovibrational spectrum of the v 14 CH 3-bending mode of dimethyl sulfide CH 3 SCH 3 was recorded in the 945-1005 cm À1 spectral region combining data from a tunable infrared quantum cascade laser spectrometer coupled to a pulsed slit jet and from a high resolution Fourier transform spectrometer coupled to a room temperature gas absorption cell. The characteristic PQR band contour of a vibrational mode with a b 1 symmetry species in the C 2v group was observed with both infrared methods but the rovibrational cooling achieved in the pulsed supersonic expansion (20 K in rotation) proved to be essential for starting the rovibrational analysis of such asymmetric top molecule. Internal rotation splittings were recently observed and analyzed in the ground and first torsional excited states. However, they are expected to be very small and could not be resolved in the v 14 state using our infrared spectroscopic probes. Therefore a classic reduced effective Hamiltonian of an asymmetric rigid rotor was used. Finally, 1119 transitions from both jet-cooled and room temperature experiments were assigned and included in a global fit with J 29. A total of 9 rovibrational parameters including pure rotational constants as well as quartic centrifugal distortion constants were determined with high accuracy. These parameters can be used to produce a reliable line-list for an atmospheric detection of DMS.

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Hollow waveguide enhanced dimethyl sulfide sensor based on a 3.3 μm interband cascade laser

Cited by 24 publications

References 30 publications

Influence of Light Coupling Configuration and Alignment on the Stability of HWG-Based Gas Sensor System for Real-Time Detection of Exhaled Carbon Dioxide

Influence of Light Coupling Configuration and Alignment on the Stability of HWG-Based Gas Sensor System for Real-Time Detection of Exhaled Carbon Dioxide

Mid-Infrared Tunable Laser-Based Broadband Fingerprint Absorption Spectroscopy for Trace Gas Sensing: A Review

High resolution rovibrational analysis of dimethyl sulfide spectrum in the 10 µm atmospheric window combining supersonic jet-quantum cascade laser and FTIR spectroscopies

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Hollow waveguide enhanced dimethyl sulfide sensor based on a 3.3 μm interband cascade laser

Cited by 24 publications

References 30 publications

Influence of Light Coupling Configuration and Alignment on the Stability of HWG-Based Gas Sensor System for Real-Time Detection of Exhaled Carbon Dioxide

Influence of Light Coupling Configuration and Alignment on the Stability of HWG-Based Gas Sensor System for Real-Time Detection of Exhaled Carbon Dioxide

Mid-Infrared Tunable Laser-Based Broadband Fingerprint Absorption Spectroscopy for Trace Gas Sensing: A Review

High resolution rovibrational analysis of dimethyl sulfide spectrum in the 10 µm atmospheric window combining supersonic jet-quantum cascade laser and FTIR spectroscopies

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High resolution rovibrational analysis of dimethyl sulfide spectrum in the 10 µm atmospheric window combining supersonic jet-quantum cascade laser and FTIR spectroscopies