Detection of greenhouse gas CO2 by gas cell based on anti-resonance hollow-core fiber

Jun Li; Hao Li; Hongye Li; Zefeng Wang

doi:10.1117/12.2599506

18 June 2021 Detection of greenhouse gas CO₂ by gas cell based on anti-resonance hollow-core fiber

Jun Li, Hao Li, Hongye Li, Zefeng Wang

Proceedings Volume 11850, First Optics Frontier Conference; 118500P (2021) https://doi.org/10.1117/12.2599506
Event: First Optics Frontier Conference, 2021, Hangzhou, China

Abstract

Here, we use a compact gas cavity based on anti-resonance hollow-core fiber (HCF) for trace gas detection. Since there are lots of characteristic absorption lines (P and R branch) of CO₂ molecule in 2 μm band, we used a self-made 2 μm fiber amplifier seeded by a precisely tunable narrow linewidth diode laser as the detection light source. The absorption characteristics of R(26), R(28), R(30) and R(32) at different CO₂ pressure are measured and analyzed. This work provides a potential cost-effective method for the high-precision detection of trace gas.

Citation Download Citation

Jun Li, Hao Li, Hongye Li, and Zefeng Wang "Detection of greenhouse gas CO₂ by gas cell based on anti-resonance hollow-core fiber", Proc. SPIE 11850, First Optics Frontier Conference, 118500P (18 June 2021); https://doi.org/10.1117/12.2599506

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