Piezoelectric effect-based detector for spectroscopic application

Li, Jingsong; Liu, Ningwu; Ding, Jia; Zhou, Sheng; He, Tianbo; Zhang, Lei

doi:10.1016/j.optlaseng.2018.11.020

Cited by 26 publications

(10 citation statements)

References 27 publications

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“…Afterwards, the research group verified experimentally that the results detected by QCTF with much lower cost were slightly better than that by a commercial infrared MCT detector. Furthermore, they also investigated the effect of incident light beam excitation position related to QCTF on signal amplitude and Q-factor, as well as the impact of incident light intensity and pressure on the intrinsic property of QCTF, in order to explore and demonstrate the capabilities of this technique [166]. Figure 7.…”

Section: Standoff Quartz-enhanced Photoacoustic Spectroscopymentioning

confidence: 99%

Standoff Chemical Detection Using Laser Absorption Spectroscopy: A Review

et al. 2020

Remote Sensing

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Remote chemical detection in the atmosphere or some specific space has always been of great interest in many applications for environmental protection and safety. Laser absorption spectroscopy (LAS) is a highly desirable technology, benefiting from high measurement sensitivity, improved spectral selectivity or resolution, fast response and capability of good spatial resolution, multi-species and standoff detection with a non-cooperative target. Numerous LAS-based standoff detection techniques have seen rapid development recently and are reviewed herein, including differential absorption LiDAR, tunable laser absorption spectroscopy, laser photoacoustic spectroscopy, dual comb spectroscopy, laser heterodyne radiometry and active coherent laser absorption spectroscopy. An update of the current status of these various methods is presented, covering their principles, system compositions, features, developments and applications for standoff chemical detection over the last decade. In addition, a performance comparison together with the challenges and opportunities analysis is presented that describes the broad LAS-based techniques within the framework of remote sensing research and their directions of development for meeting potential practical use.

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Section: Standoff Quartz-enhanced Photoacoustic Spectroscopymentioning

confidence: 99%

Standoff Chemical Detection Using Laser Absorption Spectroscopy: A Review

et al. 2020

Remote Sensing

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“…In this paper, both static high-temperature tube furnace and flat-flame burner were used to experimentally investigate the performance of the proposed WM-DAS method. For the high-temperature tube furnace, instead of the commonly used three-zone quartz optical cell [1,4,34,35] which has good non-absorbability to polarized molecular but poor impermeability, a self-designed gas cell was used as shown in Figure 1. The main body of the cell was made of 316 L stainless steel with a polished, coated inner surface to maintain both impermeability and non-absorbability.…”

Section: Experimental Systemmentioning

confidence: 99%

“…Through years of development, tunable diode laser absorption spectroscopy (TDLAS) has become one of the most important approaches in gas monitoring and has succeeded in various fields, including spectral line parameter measurements [1][2][3][4], and the diagnostic of combustion [5][6][7][8][9] and plasma [10][11][12]. Particularly, the 2f /1f method introduced by Hanson et al [13][14][15] that overcomes the complicated calibration issue has further promoted the TDLAS technique toward practical applications.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive, Calibration-Free WM-DAS Method for Recovering Absorbance—Part II: Experimental Analysis

Peng

Ding

2020

Sensors

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Following the theoretical work in Part I, in this experimental study, the robustness, temporal resolution, and the narrow scan performance of the proposed wavelength modulation-direct absorption spectroscopy (WM-DAS) method are experimentally validated in a high-temperature tube furnace. The electromagnetic and other random-frequency noises can be effectively eliminated by extracting the characteristic spectra of the light intensity. The performance of WM-DAS with modulation frequencies from 0.1 to 100 kHz and scan indexes from 3.3 to 11.1 are also investigated at atmospheric pressure. The proposed method produces accurate line profile and high SNR over 500 consistently even with a weak absorption. As for real applications, the spectral line parameters of CO at 4300.6999 cm−1 including the collisional broadening, Dicke narrowing, and their dependence on temperature are measured. Furthermore, the high-speed measurement (1 ms) of the temperature and CO concentration of a McKenna flat flame are demonstrated.

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“…In addition, Zheng et al proposed a promising technique for establishing the mass of emanated nitrogen oxide (NO) and other compositions of cigarette smoke [23]. Li et al developed a piezoelectric effect-based detector based on a broadband tunable external cavity QCL [24]. He et al developed a detector based on quartz-enhanced photoacoustic spectroscopy, which is a compact, portable and rechargeable sensor platform for the sensitive detection of carbon monoxide (CO) [25].…”

Section: Introductionmentioning

confidence: 99%

Air Pollution: Sensitive Detection of PM2.5 and PM10 Concentration Using Hyperspectral Imaging

et al. 2021

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This paper proposes a method to detect air pollution by applying a hyperspectral imaging algorithm for visible light, near infrared, and far infrared. By assigning hyperspectral information to images from monocular, near infrared, and thermal imaging, principal component analysis is performed on hyperspectral images taken at different times to obtain the solar radiation intensity. The Beer–Lambert law and multivariate regression analysis are used to calculate the PM2.5 and PM10 concentrations during the period, which are compared with the corresponding PM2.5 and PM10 concentrations from the Taiwan Environmental Protection Agency to evaluate the accuracy of this method. This study reveals that the accuracy in the visible light band is higher than the near-infrared and far-infrared bands, and it is also the most convenient band for data acquisition. Therefore, in the future, mobile phone cameras will be able to analyze the PM2.5 and PM10 concentrations at any given time using this algorithm by capturing images to increase the convenience and immediacy of detection.

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Piezoelectric effect-based detector for spectroscopic application

Cited by 26 publications

References 27 publications

Standoff Chemical Detection Using Laser Absorption Spectroscopy: A Review

Standoff Chemical Detection Using Laser Absorption Spectroscopy: A Review

Highly Sensitive, Calibration-Free WM-DAS Method for Recovering Absorbance—Part II: Experimental Analysis

Air Pollution: Sensitive Detection of PM2.5 and PM10 Concentration Using Hyperspectral Imaging

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