CW DFB RT diode laser based sensor for trace-gas detection of ethane using novel compact multipass gas absorption cell

Jahjah, Mohammad; Lewicki, R.; Tittel, Frank K.; Krzempek, Karol; Stefański, Przemysław; So, Stephen; Thomazy, David

doi:10.1117/12.2004528

Cited by 2 publications

(1 citation statement)

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“…Tunable diode laser absorption spectroscopy (TDLAS) is one of the most commonly used gas detection methods with high sensitivity. The system based on the distributed feedback (DFB) laser [4][5] has narrow line-widths whose wavelength can be precisely tuned to match a gas absorption line, giving high spectral power density. However, DFB lasers have several disadvantages, for example, they are generally expensive and gas specific.…”

Section: Introductionmentioning

confidence: 99%

Research on multi-component gas optical detection system based on conjugated interferometer

et al. 2017

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An optical multi-component gas detection system based on the conjugated interferometer (CI) is proposed and experimentally demonstrated. It can realize the concentration detection of mixture gas in the environment. The CI can transform the absorption spectrum of the target gases to a conjugated emission spectrum, when combining the CI with the broadband light source, the spectrum of output light matches well with the absorption spectrum of target gases. The CI design for different target gases can be achieved by replacing the kind of target absorbing gas in the CI filter. The traditional fiber gas sensor system requires multiple light sources for detection when there are several kinds of gases, and this problem has been solved by using the CI filter combined with the broadband light source. The experimental results show that the system can detect the concentration of multi-component gases, which are mixed with C 2 H 2 and NH 3 . Experimental results also show a good concentration sensing linearity.

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Section: Introductionmentioning

confidence: 99%

Research on multi-component gas optical detection system based on conjugated interferometer

et al. 2017

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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

130

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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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CW DFB RT diode laser based sensor for trace-gas detection of ethane using novel compact multipass gas absorption cell

Cited by 2 publications

References 14 publications

Research on multi-component gas optical detection system based on conjugated interferometer

Research on multi-component gas optical detection system based on conjugated interferometer

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

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