scholarly journals Efficient diode-pumped mid-infrared emission from acetylene-filled hollow-core fiber

2014 ◽  
Vol 22 (18) ◽  
pp. 21872 ◽  
Author(s):  
Zefeng Wang ◽  
Walter Belardi ◽  
Fei Yu ◽  
William J. Wadsworth ◽  
Jonathan C. Knight
Keyword(s):  
Infrared Emission ◽  
Hollow Core ◽  
Mid Infrared ◽  
Diode Pumped ◽  
Core Fiber

Diode-pumped single-pass tunable mid-infrared gas Raman source by methane-filled hollow-core fiber

2019 ◽  
Vol 16 (8) ◽  
pp. 085107
Author(s):  
Wei Huang ◽  
Yulong Cui ◽  
Zhixian Li ◽  
Zhiyue Zhou ◽  
Yubin Chen ◽  
...  
Keyword(s):  
Hollow Core ◽  
Mid Infrared ◽  
Single Pass ◽  
Diode Pumped ◽  
Core Fiber

Tunable mid-infrared emission from acetylene-filled hollow-core fiber

2016 ◽  
Author(s):  
Zefeng Wang ◽  
Zhiyue Zhou ◽  
Zhixian Li ◽  
Naiqian Zhang ◽  
Yubin Chen
Keyword(s):  
Infrared Emission ◽  
Hollow Core ◽  
Mid Infrared ◽  
Core Fiber

scholarly journals Antiresonant Hollow-Core Fiber-Based Dual Gas Sensor for Detection of Methane and Carbon Dioxide in the Near- and Mid-Infrared Regions

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3813 ◽  
Author(s):  
Piotr Jaworski ◽  
Paweł Kozioł ◽  
Karol Krzempek ◽  
Dakun Wu ◽  
Fei Yu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Simultaneous Detection ◽  
Hollow Core ◽  
Mid Infrared ◽  
Sensing Applications ◽  
Core Fiber ◽  
Sensor Configuration ◽  
Carbon Dioxide Co2

In this work, we present for the first time a laser-based dual gas sensor utilizing a silica-based Antiresonant Hollow-Core Fiber (ARHCF) operating in the Near- and Mid-Infrared spectral region. A 1-m-long fiber with an 84-µm diameter air-core was implemented as a low-volume absorption cell in a sensor configuration utilizing the simple and well-known Wavelength Modulation Spectroscopy (WMS) method. The fiber was filled with a mixture of methane (CH4) and carbon dioxide (CO2), and a simultaneous detection of both gases was demonstrated targeting their transitions at 3.334 µm and 1.574 µm, respectively. Due to excellent guidance properties of the fiber and low background noise, the proposed sensor reached a detection limit down to 24 parts-per-billion by volume for CH4 and 144 parts-per-million by volume for CO2. The obtained results confirm the suitability of ARHCF for efficient use in gas sensing applications for over a broad spectral range. Thanks to the demonstrated low loss, such fibers with lengths of over one meter can be used for increasing the laser-gas molecules interaction path, substituting bulk optics-based multipass cells, while delivering required flexibility, compactness, reliability and enhancement in the sensor’s sensitivity.

Hollow-Core-Fiber Delivery of Broadband Mid-Infrared Light for Remote Multi-Species Spectroscopy

2021 ◽  
Author(s):  
Kerr Johnson ◽  
Pablo Castro-Marin ◽  
Carl Farrell ◽  
Ian A. Davidson ◽  
Gregory T. Jasion ◽  
...  
Keyword(s):  
Infrared Light ◽  
Hollow Core ◽  
Mid Infrared ◽  
Core Fiber

Anti-Resonant, Mid-Infrared Silica Hollow-Core Fiber

2020 ◽  
Author(s):  
Ian A. Davidson ◽  
Shuichiro Rikimi ◽  
Hesham Sakr ◽  
Gregory T. Jasion ◽  
Thomas D. Bradley ◽  
...  
Keyword(s):  
Hollow Core ◽  
Mid Infrared ◽  
Core Fiber

scholarly journals Mid-infrared 1  W hollow-core fiber gas laser source

2017 ◽  
Vol 42 (20) ◽  
pp. 4055 ◽  
Author(s):  
Mengrong Xu ◽  
Fei Yu ◽  
Jonathan Knight
Keyword(s):  
Laser Source ◽  
Hollow Core ◽  
Mid Infrared ◽  
Gas Laser ◽  
Core Fiber

scholarly journals Kagome Hollow Core Fiber-Based Mid-Infrared Dispersion Spectroscopy of Methane at Sub-ppm Levels

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3352 ◽  
Author(s):  
Karol Krzempek ◽  
Krzysztof Abramski ◽  
Michal Nikodem
Keyword(s):  
Gas Sensors ◽  
Gas Sensing ◽  
Difference Frequency Generation ◽  
Hollow Core ◽  
Large Core ◽  
Core Diameter ◽  
Mid Infrared ◽  
Core Fiber ◽  
Crystal Fibers ◽  
Long Fibers

In this paper, we demonstrate the laser-based gas sensing of methane near 3.3 µm inside hollow-core photonic crystal fibers. We exploit a novel anti-resonant Kagome-type hollow-core fiber with a large core diameter (more than 100 µm) which results in gas filling times of less than 10 s for 1.3-m-long fibers. Using a difference frequency generation source and chirped laser dispersion spectroscopy technique, methane sensing with sub-parts-per-million by volume detection limit is performed. The detection of ambient methane is also demonstrated. The presented results indicate the feasibility of using a hollow-core fiber for increasing the path-length and improving the sensitivity of the mid-infrared gas sensors.

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