A5016205816- Spectroscopy and Laser Applications
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Advanced Chemical Sensor Technologies
- Gas Sensing Nanomaterials and Sensors
- Phase Equilibria and Thermodynamics
- Spectroscopy Techniques in Biomedical and Chemical Research
- Laser Design and Applications
- Photoacoustic and Ultrasonic Imaging
- Heat Transfer and Boiling Studies
- Advanced Fiber Optic Sensors
- Acoustic Wave Resonator Technologies
Liaocheng University
2021-2025
This paper reported on a system for the detection of trace acetylene (C2H2) gas utilizing surface mounted device quartz tuning fork (SMD QTF) in conjunction with light-induced thermoelastic spectroscopy (LITES) and provided comparative analysis against conventional plug-in (P-QTF). The SMD QTF is cost-effective standard instrument featuring transparent glass shell smaller size, which eliminates need stripping LITES effectively mitigates oxidation as well drift resonance frequency. has almost...
A dual-gas intra-cavity quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on frequency division multiplexing (FDM) of a quartz tuning fork (QTF) using two acoustic microresonators (AmRs) was demonstrated in this paper. The AmRs were constructed into fiber ring lasers with C-band and L-band erbium-doped fibers (EDFs) pump sources, eliminating the model competition dual-wavelength improving stability wavelength. Two laser beams modulated different frequencies <italic...
In this article, a dual-spectroscopy gas sensing system based on ring cavity laser and quartz tuning fork (QTF) is designed. A 15 m erbium-doped fiber (EDF) with 1500 ppm doping concentration used as gain medium, piezoelectric transducer (PZT) acousto-optic modulator (AOM) are detection methods. The first collimator (FC) emits beam; the received by second FC after passing through an off-beam acoustic micro-resonator (AmR) for quartz-enhanced photoacoustic spectroscopy (QEPAS) signal...
Abstract An intra‐cavity quartz‐enhanced photoacoustic spectroscopy (QEPAS) sensor using fiber‐ring laser is demonstrated. The includes an erbium‐doped fiber (EDF) and a quartz tuning fork (QTF), realizes wavelength scanning through piezoelectric transducer (PZT). acousto‐optic modulator (AOM) used to modulate intensity at frequency of 32.758 kHz. We use optical switches detect acetylene (C 2 H ) carbon dioxide (CO 1530.37 1572.66 nm, respectively, based on the time division multiplexing...
In this paper, we propose a scheme to eliminate the laser power losses that occur in photoacoustic spectroscopy (PAS) multi-point gas sensing uses reference channel, and then design new two-optical-path PAS cell is constructed using both cells. The second harmonic signals are extracted from cells lock-in amplifier, ratio of these used calculate concentration an approach can effectively influence on system's detection performance. Acetylene (C <sub...