Mid-infrared photothermal gas sensor enabled by core-cladding mode interference in a hollow-core fiber

Hu, Mengyuan; Yao, Chenyu; Ventura, Andrea; Hayashi, Juliano G.; Poletti, F.; Ren, Wei

doi:10.1109/jlt.2022.3195214

Cited by 7 publications

(3 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We believe that the gas mixer used to prepare the samples is the main source of the deviations observed on the graph. However, the obtained linearity is comparable to previously published experimental work on PTS [39,40]. The last experiment involved recording the long-term sensor noise.…”

Section: Sensor Performance Evaluationsupporting

confidence: 85%

Photothermal gas detection using a miniaturized fiber Fabry-Perot cavity

Krzempek,

Jaworski,

Tenbrake

et al. 2024

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

Section: Sensor Performance Evaluationsupporting

confidence: 85%

Photothermal gas detection using a miniaturized fiber Fabry-Perot cavity

Krzempek,

Jaworski,

Tenbrake

et al. 2024

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

“…To verify the theoretical analysis, we conducted further experiments to compare measurement precisions for PTI systems with a narrow linewidth probe and a BLS, and the results are presented in Figure 13. During the experiments, the pump wavelength is Long-term stability PT-SI [28] 110 145 2.1 × 10 −8 1% (5 h) MPD-PTS [16] 467 100 1.6 × 10 −11 0.8% (3 h) PT-FPI [29] 13 1000 3.6 × 10 −9 1.7% (2 h) PT-CCMI [30] fixed at 1531.59 nm and the gas cell is filled with 5, 10, 100, and 1000 ppm acetylene balanced in nitrogen at atmospheric pressure. The measurement precision is determined by dividing the s.d.…”

Section: Discussionmentioning

confidence: 99%

Low‐Coherence Photothermal Interferometry for Precision Spectroscopic Gas Sensing

Hong

Chen

Jin

et al. 2023

Laser & Photonics Reviews

View full text Add to dashboard Cite

Laser spectroscopy has shown great potential as a cost‐effective method for trace gas detection with high sensitivity and specificity. However, it still falls short in applications such as the measurement of stable isotope ratios, which require high precision and stability. Here, ultrasensitive gas detection with remarkable precision and stability as well as better immunity to isobaric interference is demonstrated by use of low‐coherence photothermal interferometry. With a 10 cm long hollow‐core fiber, acetylene detection is achieved with a noise‐equivalent concentration of 0.7 part‐per‐billion and measurement precision of 0.025%. The instability of the detection over a period of 3 h is ±0.038%, 10 times better than the state‐of‐the‐art photothermal spectroscopy. The measurement of the 13C/12C isotope ratio of acetylene is demonstrated with measurement precision of ≈0.01%. This study highlights the potential of low‐coherence photothermal interferometry as an alternative to mass spectrometers, offering reliable gas detection in a compact form.

show abstract

“…Recently, Wang et al demonstrated dual-comb photothermal spectroscopy for broadband, sensitive and high-precision molecular spectroscopy by successfully detecting the frequency-comb-induced photothermal modulations in an HCF 5 . Thanks to the recent advance of fiber technology, MIR-HCFs have enabled more sensitive gas-phase photothermal spectroscopy by exploiting the molecular fingerprint spectral region 6 , 7 .…”

mentioning

confidence: 99%