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qepas acoustic detection module adm  (Thorlabs)

 
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    Thorlabs qepas acoustic detection module adm
    (a) Schematic of dielectric-coated SPF <t>EW-QEPAS</t> setup for methane measurements in a gas box. The Acoustic Detection Module <t>(ADM)</t> is comprised of the QTF, mR tubes, and pre-amplifier. (b) Schematic of the side-polished fiber passing through the mR tubes and prongs of the QTF, showing the generated acoustic wave and the standing waves generated in the tubes. The length of the polished section is 17 mm. SMF: Single-mode fiber, QTF: Quartz Tuning Fork, mR: millimeter Resonator tube. (c) An image of the coated SPF passed through the resonator tubes and QTF prongs, held in position by the fiber rotators on either side with the visible camera to monitor the fiber position inside the gas box while pumping.
    Qepas Acoustic Detection Module Adm, supplied by Thorlabs, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/acoustic+detection+module/cell+detection+qepas/pmc12664072-72-5-12
    Average 86 stars, based on 1 article reviews
    qepas acoustic detection module adm - by Bioz Stars, 2026-10
    86/100 stars

    Images

    1) Product Images from "Side-polished fiber evanescent wave quartz-enhanced photoacoustic spectroscopy employing dielectric coatings for evanescent field enhancement"

    Article Title: Side-polished fiber evanescent wave quartz-enhanced photoacoustic spectroscopy employing dielectric coatings for evanescent field enhancement

    Journal: Photoacoustics

    doi: 10.1016/j.pacs.2025.100782

    (a) Schematic of dielectric-coated SPF EW-QEPAS setup for methane measurements in a gas box. The Acoustic Detection Module (ADM) is comprised of the QTF, mR tubes, and pre-amplifier. (b) Schematic of the side-polished fiber passing through the mR tubes and prongs of the QTF, showing the generated acoustic wave and the standing waves generated in the tubes. The length of the polished section is 17 mm. SMF: Single-mode fiber, QTF: Quartz Tuning Fork, mR: millimeter Resonator tube. (c) An image of the coated SPF passed through the resonator tubes and QTF prongs, held in position by the fiber rotators on either side with the visible camera to monitor the fiber position inside the gas box while pumping.
    Figure Legend Snippet: (a) Schematic of dielectric-coated SPF EW-QEPAS setup for methane measurements in a gas box. The Acoustic Detection Module (ADM) is comprised of the QTF, mR tubes, and pre-amplifier. (b) Schematic of the side-polished fiber passing through the mR tubes and prongs of the QTF, showing the generated acoustic wave and the standing waves generated in the tubes. The length of the polished section is 17 mm. SMF: Single-mode fiber, QTF: Quartz Tuning Fork, mR: millimeter Resonator tube. (c) An image of the coated SPF passed through the resonator tubes and QTF prongs, held in position by the fiber rotators on either side with the visible camera to monitor the fiber position inside the gas box while pumping.

    Techniques Used: Generated

    Comparison of 2 f QEPAS signals of 1% methane (by volume) in N 2 at 1653.7 nm obtained with an uncoated side-polished fiber and with ZrO 2 coated side-polished fibers of thicknesses 130, 153, 164, 170, 179, 192, and 196 nm. The increase in signal due to the zirconium oxide coating is calculated to be 153 times the uncoated fibers’ QEPAS signal.
    Figure Legend Snippet: Comparison of 2 f QEPAS signals of 1% methane (by volume) in N 2 at 1653.7 nm obtained with an uncoated side-polished fiber and with ZrO 2 coated side-polished fibers of thicknesses 130, 153, 164, 170, 179, 192, and 196 nm. The increase in signal due to the zirconium oxide coating is calculated to be 153 times the uncoated fibers’ QEPAS signal.

    Techniques Used: Comparison

    (a) Solid black squares: Maximum 2 f QEPAS signal measured for 1% methane (by volume) in N 2 for different ZrO 2 coatings on the side polished fiber at 800 mbar. (b) Solid dots: Maximum 2 f QEPAS signal as a function of methane mixing ratio (100–500 ppmv) for the ZrO 2 coated SPF of thickness 179 nm. Red solid line: Linear regression applied to the QEPAS signal data. Data was collected using a digital lock-in amplifier with a time constant of 100 ms, a positive ramp with a period of 100 s covering 8.75 mA, and a modulation frequency of 6220.95 Hz with a depth of 5.1 mA.
    Figure Legend Snippet: (a) Solid black squares: Maximum 2 f QEPAS signal measured for 1% methane (by volume) in N 2 for different ZrO 2 coatings on the side polished fiber at 800 mbar. (b) Solid dots: Maximum 2 f QEPAS signal as a function of methane mixing ratio (100–500 ppmv) for the ZrO 2 coated SPF of thickness 179 nm. Red solid line: Linear regression applied to the QEPAS signal data. Data was collected using a digital lock-in amplifier with a time constant of 100 ms, a positive ramp with a period of 100 s covering 8.75 mA, and a modulation frequency of 6220.95 Hz with a depth of 5.1 mA.

    Techniques Used:

    Allan Deviation of the QEPAS signal as a function of the lock-in integration time for laser on-on peak (black) and laser off peak (red) in 500 ppmv of methane, and laser on-on peak in pure N 2 (green). The noise level decreased with increasing integration time following a trend of 1/ τ (blue). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
    Figure Legend Snippet: Allan Deviation of the QEPAS signal as a function of the lock-in integration time for laser on-on peak (black) and laser off peak (red) in 500 ppmv of methane, and laser on-on peak in pure N 2 (green). The noise level decreased with increasing integration time following a trend of 1/ τ (blue). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

    Techniques Used:

    Related Articles

    other:

    Article Title: Measurement of methane, nitrous oxide and ammonia in atmosphere with a compact quartz-enhanced photoacoustic sensor
    Article Snippet: Each SH is composed of a quantum cascade laser (QCL), a ZnSe lens with a focal length of 40 mm, an acoustic detection module (ADM) and an optical power meter (THORLABS PM100USB) for alignment purposes.

    Produced:

    Article Title: Commercial and Custom Quartz Tuning Forks for Quartz Enhanced Photoacoustic Spectroscopy: Stability under Humidity Variation.
    Article Snippet: .. The so-called “T-shape” QTF with a resonance frequency around 12 kHz and a Q-factor~14,000 at atmospheric pressure is now commercialized in an acoustic detection module produced by Thorlabs [14]. ..

    Article Title: Commercial and Custom Quartz Tuning Forks for Quartz Enhanced Photoacoustic Spectroscopy: Stability under Humidity Variation
    Article Snippet: .. The so-called “T-shape” QTF with a resonance frequency around 12 kHz and a Q-factor~14,000 at atmospheric pressure is now commercialized in an acoustic detection module produced by Thorlabs [ ]. ..



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    Image Search Results


    (a) Schematic of dielectric-coated SPF EW-QEPAS setup for methane measurements in a gas box. The Acoustic Detection Module (ADM) is comprised of the QTF, mR tubes, and pre-amplifier. (b) Schematic of the side-polished fiber passing through the mR tubes and prongs of the QTF, showing the generated acoustic wave and the standing waves generated in the tubes. The length of the polished section is 17 mm. SMF: Single-mode fiber, QTF: Quartz Tuning Fork, mR: millimeter Resonator tube. (c) An image of the coated SPF passed through the resonator tubes and QTF prongs, held in position by the fiber rotators on either side with the visible camera to monitor the fiber position inside the gas box while pumping.

    Journal: Photoacoustics

    Article Title: Side-polished fiber evanescent wave quartz-enhanced photoacoustic spectroscopy employing dielectric coatings for evanescent field enhancement

    doi: 10.1016/j.pacs.2025.100782

    Figure Lengend Snippet: (a) Schematic of dielectric-coated SPF EW-QEPAS setup for methane measurements in a gas box. The Acoustic Detection Module (ADM) is comprised of the QTF, mR tubes, and pre-amplifier. (b) Schematic of the side-polished fiber passing through the mR tubes and prongs of the QTF, showing the generated acoustic wave and the standing waves generated in the tubes. The length of the polished section is 17 mm. SMF: Single-mode fiber, QTF: Quartz Tuning Fork, mR: millimeter Resonator tube. (c) An image of the coated SPF passed through the resonator tubes and QTF prongs, held in position by the fiber rotators on either side with the visible camera to monitor the fiber position inside the gas box while pumping.

    Article Snippet: In this study, a commercial QEPAS acoustic detection module (ADM) was used (Thorlabs ADM01).

    Techniques: Generated

    Comparison of 2 f QEPAS signals of 1% methane (by volume) in N 2 at 1653.7 nm obtained with an uncoated side-polished fiber and with ZrO 2 coated side-polished fibers of thicknesses 130, 153, 164, 170, 179, 192, and 196 nm. The increase in signal due to the zirconium oxide coating is calculated to be 153 times the uncoated fibers’ QEPAS signal.

    Journal: Photoacoustics

    Article Title: Side-polished fiber evanescent wave quartz-enhanced photoacoustic spectroscopy employing dielectric coatings for evanescent field enhancement

    doi: 10.1016/j.pacs.2025.100782

    Figure Lengend Snippet: Comparison of 2 f QEPAS signals of 1% methane (by volume) in N 2 at 1653.7 nm obtained with an uncoated side-polished fiber and with ZrO 2 coated side-polished fibers of thicknesses 130, 153, 164, 170, 179, 192, and 196 nm. The increase in signal due to the zirconium oxide coating is calculated to be 153 times the uncoated fibers’ QEPAS signal.

    Article Snippet: In this study, a commercial QEPAS acoustic detection module (ADM) was used (Thorlabs ADM01).

    Techniques: Comparison

    (a) Solid black squares: Maximum 2 f QEPAS signal measured for 1% methane (by volume) in N 2 for different ZrO 2 coatings on the side polished fiber at 800 mbar. (b) Solid dots: Maximum 2 f QEPAS signal as a function of methane mixing ratio (100–500 ppmv) for the ZrO 2 coated SPF of thickness 179 nm. Red solid line: Linear regression applied to the QEPAS signal data. Data was collected using a digital lock-in amplifier with a time constant of 100 ms, a positive ramp with a period of 100 s covering 8.75 mA, and a modulation frequency of 6220.95 Hz with a depth of 5.1 mA.

    Journal: Photoacoustics

    Article Title: Side-polished fiber evanescent wave quartz-enhanced photoacoustic spectroscopy employing dielectric coatings for evanescent field enhancement

    doi: 10.1016/j.pacs.2025.100782

    Figure Lengend Snippet: (a) Solid black squares: Maximum 2 f QEPAS signal measured for 1% methane (by volume) in N 2 for different ZrO 2 coatings on the side polished fiber at 800 mbar. (b) Solid dots: Maximum 2 f QEPAS signal as a function of methane mixing ratio (100–500 ppmv) for the ZrO 2 coated SPF of thickness 179 nm. Red solid line: Linear regression applied to the QEPAS signal data. Data was collected using a digital lock-in amplifier with a time constant of 100 ms, a positive ramp with a period of 100 s covering 8.75 mA, and a modulation frequency of 6220.95 Hz with a depth of 5.1 mA.

    Article Snippet: In this study, a commercial QEPAS acoustic detection module (ADM) was used (Thorlabs ADM01).

    Techniques:

    Allan Deviation of the QEPAS signal as a function of the lock-in integration time for laser on-on peak (black) and laser off peak (red) in 500 ppmv of methane, and laser on-on peak in pure N 2 (green). The noise level decreased with increasing integration time following a trend of 1/ τ (blue). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

    Journal: Photoacoustics

    Article Title: Side-polished fiber evanescent wave quartz-enhanced photoacoustic spectroscopy employing dielectric coatings for evanescent field enhancement

    doi: 10.1016/j.pacs.2025.100782

    Figure Lengend Snippet: Allan Deviation of the QEPAS signal as a function of the lock-in integration time for laser on-on peak (black) and laser off peak (red) in 500 ppmv of methane, and laser on-on peak in pure N 2 (green). The noise level decreased with increasing integration time following a trend of 1/ τ (blue). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

    Article Snippet: In this study, a commercial QEPAS acoustic detection module (ADM) was used (Thorlabs ADM01).

    Techniques:

    (a) CAD of the starting acoustic detection module ADM01; (b) reconstruction of the internal volume chamber.

    Journal: Photoacoustics

    Article Title: Effect of gas turbulence in quartz-enhanced photoacoustic spectroscopy: A comprehensive flow field analysis

    doi: 10.1016/j.pacs.2024.100625

    Figure Lengend Snippet: (a) CAD of the starting acoustic detection module ADM01; (b) reconstruction of the internal volume chamber.

    Article Snippet: Starting from the CAD of the acoustic detection module ADM01 ( a) provided by Thorlabs GmbH , the computational domain of the internal module chamber ( b) has been preliminary reconstructed with a volume extraction technique implemented in the Ansys Fluent Reclaim Volume software. (a) CAD of the starting acoustic detection module ADM01; (b) reconstruction of the internal volume chamber.

    Techniques: