Two-component gas quartz-enhanced photoacoustic spectroscopy sensor based on time-division multiplexing of distributed-feedback laser driver current

Wang, Zongliang; Chang, Jun; Tian, Cunwei; Feng, Yujian; Wang, Cheng; Zhang, Hao; Zhang, Qinduan; Li, Hefu; Feng, Zhenbao; Xiu-kun, Zhang; Tang, Longfei

doi:10.1364/ao.58.008479

Cited by 13 publications

(3 citation statements)

References 24 publications

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“…At 1653 nm (CH 4 absorption peak) and 2004 nm (CO 2 absorption peak), CH 4 and CO 2 did not interfere. Second, detection of the mixed gas could be realized by using frequency division multiplexing [ 54 ] or time division multiplexing technology [ 55 ]. Therefore, as a long optical path photoacoustic absorption cell, STPAC would be suitable for the detection of mixed gas.…”

Section: Discussionmentioning

confidence: 99%

Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example

Liu

et al. 2021

Sensors

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The concentration of trace gases in the atmospheric environment is extremely low, but it has a great impact on the living environment of organisms. Photoacoustic spectroscopy has attracted extensive attention in the field of trace gas detection because of its high sensitivity, good selectivity, and fast response. As the core of a photoacoustic detection setup, the photoacoustic cell has a significant impact on detection performance. To improve detection sensitivity, a sphere-tube coupled photoacoustic cell (STPAC) was developed, which was mainly composed of a diffuse-reflective sphere and an acoustic resonance tube. Modulated light was reflected multiple times in the sphere to increase optical path, and photoacoustic (PA) signals were further amplified by the tube. Based on STPAC, a PA gas detection setup was built with a laser diode (LD) at 450 nm as the light source. The experimental results showed that the minimum detection limit (noise equivalent concentration, NEC) of NO2 was ~0.7 parts per billion (ppb). Compared with the T-type PA cell (TPAC) in which the modulated light passed through the sphere, the signal-to-noise ratio of STPAC was increased by an order of magnitude at the same concentration of the NO2 sample.

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Section: Discussionmentioning

confidence: 99%

Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example

Liu

et al. 2021

Sensors

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“…Photoacoustic spectroscopy (PAS)-based optical sensor platforms [6] , [7] , [8] , [9] , [10] , [11] , which feature the advantages of high sensitivity, high selectivity, fast response, long lifetime and well-established sensing devices, have played an important role in the field of multi-component gas sensing [12] , [13] , [14] , [15] , [16] , [17] , [18] . Various PAS-based multi-gas sensor modalities have been developed, such as Fourier transform infrared PAS modality [19] , [20] , broadband detection based thermal emitters or blackbody radiators using several band-pass filters [21] , the use of multi-lasers combined time-division multiplexing (TDM) methods [22] , [23] , [24] , and multi-resonators with frequency-division multiplexing (FDM) schemes [25] . Due to the relatively poor intensity of the broadband source, the weak photoacoustic (PA) signals were sensitively affected by the background noise, which was a major obstacle to highly sensitive detection [26] .…”

Section: Introductionmentioning

confidence: 99%

T-type cell mediated photoacoustic spectroscopy for simultaneous detection of multi-component gases based on triple resonance modality

et al. 2023

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“…The system simultaneously achieved the minimum detection limit (MDL) of 0.6 and 2.9 ppmv for methane (CH 4 ) and carbon dioxide (CO 2 ) detection. Wang et al 25 designed a QEPAS sensor to detect C 2 H 2 and CH 4 based on time division multiplexing (TDM) technology, achieved the detection limit of 1 and 13.14 ppmv respectively.…”

Section: Introductionmentioning

confidence: 99%

The intra‐cavity QEPAS sensor using fiber‐ring laser for C₂H₂ and CO₂ detection

Zhang

et al. 2023

Micro & Optical Tech Letters

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An intra‐cavity quartz‐enhanced photoacoustic spectroscopy (QEPAS) sensor using fiber‐ring laser is demonstrated. The sensor includes an erbium‐doped fiber (EDF) intra‐cavity laser and a quartz tuning fork (QTF), and realizes wavelength scanning through a piezoelectric transducer (PZT). The acousto‐optic modulator (AOM) is used to modulate laser intensity at a frequency of 32.758 kHz. We use optical switches to detect acetylene (C2H2) and carbon dioxide (CO2) at 1530.37 and 1572.66 nm, respectively, based on the time division multiplexing (TDM) technology. The two‐component gas sensor showed good linearity of 0.9996 and 0.9966, and could achieve a minimum detection limit (MDL) of 180.64 ppbv and 145.45 ppmv for C2H2 and CO2 detection, respectively.

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Two-component gas quartz-enhanced photoacoustic spectroscopy sensor based on time-division multiplexing of distributed-feedback laser driver current

Cited by 13 publications

References 24 publications

Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example

Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example

T-type cell mediated photoacoustic spectroscopy for simultaneous detection of multi-component gases based on triple resonance modality

The intra‐cavity QEPAS sensor using fiber‐ring laser for C₂H₂ and CO₂ detection

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Two-component gas quartz-enhanced photoacoustic spectroscopy sensor based on time-division multiplexing of distributed-feedback laser driver current

Cited by 13 publications

References 24 publications

Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example

Highly Sensitive Sphere-Tube Coupled Photoacoustic Cell Suitable for Detection of a Variety of Trace Gases: NO2 as an Example

T-type cell mediated photoacoustic spectroscopy for simultaneous detection of multi-component gases based on triple resonance modality

The intra‐cavity QEPAS sensor using fiber‐ring laser for C2H2 and CO2 detection

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The intra‐cavity QEPAS sensor using fiber‐ring laser for C₂H₂ and CO₂ detection