Nitrous oxide detection at 5.26 μm with a compound glass antiresonant hollow-core optical fiber

被引：51

作者：

Jaworski, Piotr ^{[1
]}

Krzempek, Karol ^{[1
]}

Dudzik, Grzegorz ^{[1
]}

Sazio, Pier J. ^{[2
]}

Belardi, Walter ^{[3
]}

机构：

[1] Wroclaw Univ Sci & Technol, Fac Elect, Laser & Fiber Elect Grp, PL-50370 Wroclaw, Poland

[2] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

[3] Univ Lille, CNRS, UMR 8523, PhLAM Phys Lasers Atomes & Mol, F-59000 Lille, France

来源：

OPTICS LETTERS | 2020年 / 45卷 / 06期

关键词：

NEGATIVE CURVATURE FIBER; PHOTONIC BANDGAP FIBER; ABSORPTION-SPECTROSCOPY; METHANE DETECTION; PULSE DELIVERY; LASER; PICOSECOND; COMPRESSION; NANOSECOND;

D O I：

10.1364/OL.383861

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Laser-based gas sensors utilizing various light-gas interaction phenomena have proved their capacity for detecting different gases. However, achieving reasonable sensitivity, especially in the mid-infrared, is crucial. Improving sensor detectivity usually requires incorporating multipass cells, which increase the light-gas interaction path length at a cost of reduced stability. An unconventional solution comes with the aid of hollow-core fibers. In such a fiber, light is guided inside an air-core which, when filled with the analyte gas can serve as a low-volume and robust absorption cell. Here we report on the use of a borosilicate antiresonant hollow-core fiber for laser-based gas sensing. Due to its unique structure and guidance, this fiber provides low-loss, single-mode transmission >5 mu m. The feasibility of using the fiber as a gas cell was verified by detecting nitrous oxide at 5.26 mu M with a minimum detection limit of 20 ppbv. (C) 2020 Optical Society of America

引用

页码：1326 / 1329

页数：4

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