ArticlePhotoacoustics2023
Integrated near-infrared fiber-optic photoacoustic sensing demodulator for ultra-high sensitivity gas detection.
Article in Photoacoustics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- Organic Phototransistor Photonic Synapses for Artificial Vision.Nano-micro letters · 2026Review
- A multi-pass differential photoacoustic spectrometer at 1064 nm for ambient aerosol absorption.Photoacoustics · 2025Article
- AI‑driven photonic noses: from conventional sensors to cloud‑to-edge intelligent microsystems.Microsystems & nanoengineering · 2025Review
- Conductance-photoacoustic spectroscopy for fast and concurrent sensing of hydrogen and hydrocarbons.Photoacoustics · 2025Article
- Three-dimensional optical path extended gourd-type photoacoustic cell for highly sensitive trace acetylene sensing.Photoacoustics · 2025Article
- Enhancing photoacoustic trace gas detection via a CNN-transformer denoising framework.Photoacoustics · 2025Article
- A sulfur dioxide detection platform based on photoacoustic spectroscopy and a 266.22 nm high-power stabilized LD-pumped solid-state Q-switched laser.Photoacoustics · 2025Article
- LITES-Based Sensitive COSensors (Basel, Switzerland) · 2025Article
- ppb-Level SOSensors (Basel, Switzerland) · 2024Article
- Dual-tube MEMS-based spectrophone for sub-ppb mid-IR photoacoustic gas detection.Photoacoustics · 2024Article
- Photoacoustic trace gas detection of OCS using a 2.45 mL Helmholtz resonator and a 4823.3 nm ICL light source.Photoacoustics · 2024Article
- Ultra-highly sensitive dual gases detection based on photoacoustic spectroscopy by exploiting a long-wave, high-power, wide-tunable, single-longitudinal-mode solid-state laser.Light, science & applications · 2024Article
- High-sensitivity methane detection based on QEPAS and H-QEPAS technologies combined with a self-designed 8.7 kHz quartz tuning fork.Photoacoustics · 2024Article
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
An integrated near-infrared fiber-optic photoacoustic sensing demodulator was established for ultra-high sensitivity gas detection. The demodulator has capacities of interference spectrum acquisition and calculation, laser modulation control as well as digital lock-in amplification. FPGA was utilized to realize all the control and signal processing functions, which immensely improved the integration and stability of the system. The photoacoustic signal detection based on fiber-optic Fabry-Perot (F-P) acoustic sensor was realized by applying ultra-high resolution spectral demodulation technique. The detectable frequency of photoacoustic signal achieved 10 kHz. The system integrated lock-in amplification technology, which made the noise sound pressure and dynamic response range of sound pressure detection reached 3.7 μPa/√Hz @1 kHz and 142 dB, respectively. The trace C
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