Projects per year
Abstract
In this work, we present the first demonstration of a gas sensor utilizing the Wavelength Modulation Spectroscopy technique and a mid-IR guiding Antiresonant Hollow-Core Fiber with a record length of 30 m. The self-fabricated ARHCF was used as an air-tight, low-volume absorption cell delivering an extended laser-gas molecules interaction path within the sensor's setup, which enabled it to efficiently detect ethane at 2996.88 cm−1. Benefiting from the unique guidance properties of the ARHCF, the sensor reached a minimum detection limit of 670 parts-per-trillion by volume for 14 s integration time, which is at a level comparable to the bulk optics-based systems utilizing more complex detection techniques or multipass cells with tens of meters long optical path lengths. The obtained results confirm that ARHCF-based gas sensors can successfully compete with or even outperform bulk optics-based mid-IR gas sensor configurations. The obtained results show the potential for the development of novel, low-volume, compact, and reliable types of gas detectors allowing precise analysis of various gaseous substances at their trace concentration level.
Original language | English |
---|---|
Article number | 107638 |
Journal | Optics and Laser Technology |
Volume | 147 |
Early online date | 10 Nov 2021 |
DOIs | |
Publication status | Published - 31 Mar 2022 |
Bibliographical note
Funding Information:This work was supported by the National Science Centre (NCN) [grant number UMO-2018/30/Q/ST3/00809]; National Natural Science Foundation of China [grant numbers 61935002, 61961136003]; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [grant number ZDBS-LY- JSC020]; CAS Pioneer Hundred Talents Program; the Open Fund of the Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques (South China University of Technology).
Keywords
- Antiresonant hollow-core fiber
- Fiber sensors
- Laser-based gas sensing
- Wavelength modulation spectroscopy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering
Fingerprint
Dive into the research topics of 'Sub parts-per-billion detection of ethane in a 30-meters long mid-IR Antiresonant Hollow-Core Fiber'. Together they form a unique fingerprint.Projects
- 1 Finished
-
Hollow Antiresonant Fibres for Visible and Ultraviolet Beam Delivery
Knight, J. (PI), Birks, T. (CoI) & Wadsworth, W. (CoI)
Engineering and Physical Sciences Research Council
1/11/15 → 31/10/18
Project: Research council