Advances in fiber‐based quartz enhanced photoacoustic spectroscopy for trace gas sensing

Feng, Wei; Qu, Yingdong; Gao, Yachen; Ma, Yufei

doi:10.1002/mop.32841

Cited by 48 publications

(58 citation statements)

References 78 publications

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“…It has the advantages of simple structure, wide wavelength coverage, and suitability for a variety of gas sensing systems, and therefore, it is widely used [32,33] . There is also another type of gas absorption cell made of hollow optic fibers [34,35] . But its production process is not mature, and the optical loss is high, especially in the long wavelength region.…”

Section: Introductionmentioning

confidence: 99%

Advances in multipass cell for absorption spectroscopy-based trace gas sensing technology [Invited]

Liu

2023

Chin. Opt. Lett.

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In the field of absorption spectroscopy, the multipass cell (MPC) is one of the key elements. It has the advantages of simple structure, easy adjustment, and high spectral coverage, which is an effective way to improve the detection sensitivity of gas sensing systems such as tunable diode laser absorption spectroscopy. This invited paper summarizes the design theory and the research results of some mainstream types of MPCs based on two mirrors and more than two mirrors in recent years, and briefly introduces the application of some processed products. The design theory of modified ABCD matrix and vector reflection principle are explained in detail. Finally, trends in its development are predicted.

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Section: Introductionmentioning

confidence: 99%

Advances in multipass cell for absorption spectroscopy-based trace gas sensing technology [Invited]

Liu

2023

Chin. Opt. Lett.

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“…Fiber‐optic sensors have many advantages such as small size, light weight, resistance to harsh environments and anti‐electromagnetic interference, which are widely used in environmental monitoring, rail transit and gas sensing, 1–5 especially in the field of temperature measurement. Up to now, most of fiber‐optic sensors are passive and employ a broadband light source to realize the measurement of external physical quantities 6–8 .…”

Section: Introductionmentioning

confidence: 99%

Temperature sensing technique by using a microwave photonics filter based on an actively mode‐locked fiber laser

Luo

Cai

Wang

et al. 2021

Micro & Optical Tech Letters

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In this article, a temperature‐sensing scheme by using a microwave photonics filter (MPF) based on an actively mode‐locked fiber laser (MLFL) has been proposed and experimentally demonstrated. The MPF is formed by the MLFL and a photodetector (PD). Single‐mode fibers with different lengths in the laser cavity acts as the sensing head. The experimental results show good linearity between the frequency shift of the MPF's passband and temperature variation. The sensitivity of the sensor reaches −17.17236 kHz/°C with 100 m sensing fiber in the laser cavity when the passband with central frequency of 2.985 GHz is utilized for measurement. The proposed temperature sensor has the advantages of high resolution, good reliability, and tailorable sensitivity and shows good potential in practical applications.

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“…Due to the great advantage of one of the laser properties: coherence, laser measurement techniques can offer higher precision and resolution compared to other measurement methods. In recent years, new applications, for example, defect measurement, 1 trace gas sensing, 2 laser ranging in robotics, 3,4 as well as laser vibration measurement in MEMS devices or micro nanostructures, 5,6 promote further investigations in improving the performance of the laser measurement technique.…”

Section: Introductionmentioning

confidence: 99%

Improved laser measurement using advanced techniques: A review

Liu

Wang

et al. 2021

Micro & Optical Tech Letters

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Laser measurement technique has been widely explored and applied in various fields in recent years due to its advantages of high measurement precision and resolution. However, applications in frontier fields such as MEMS motion measurement and robotics control pose have requirement for higher precision and resolution, which promote further studies in improving the performance of this technique. Many advanced techniques have been proposed and applied in the laser measurement system to optimize its performance, and the optimized measurement system has found its way in state-of-the-art applications. In this invited paper, we focus on the latest investigations and new applications of the improved laser measurement methods, especially present recent research works regarding the laser triangulation measurement and the laser heterodyne vibration measurement. At the end, we have discussed further developments and challenges of laser measurement technique.

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Advances in fiber‐based quartz enhanced photoacoustic spectroscopy for trace gas sensing

Cited by 48 publications

References 78 publications

Advances in multipass cell for absorption spectroscopy-based trace gas sensing technology [Invited]

Advances in multipass cell for absorption spectroscopy-based trace gas sensing technology [Invited]

Temperature sensing technique by using a microwave photonics filter based on an actively mode‐locked fiber laser

Improved laser measurement using advanced techniques: A review

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