Fluorescence emission induced by the femtosecond filament transmitting through the butane/air flame

Suyu Li; Yanhua Li; Zhe Shi; Laizhi Sui; He Li; Qingyi Li; Anmin Chen; Yuanfei Jiang; Mingxing Jin

doi:10.1016/j.saa.2017.08.006

Fluorescence emission induced by the femtosecond filament transmitting through the butane/air flame

Spectrochim Acta A Mol Biomol Spectrosc. 2018 Jan 15:189:32-36. doi: 10.1016/j.saa.2017.08.006. Epub 2017 Aug 3.

Authors

Suyu Li¹, Yanhua Li², Zhe Shi², Laizhi Sui², He Li², Qingyi Li², Anmin Chen², Yuanfei Jiang², Mingxing Jin³

Affiliations

¹ Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China; State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. Electronic address: suyu11@mails.jlu.edu.cn.
² Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China.
³ Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China. Electronic address: mxjin@jlu.edu.cn.

PMID: 28787624
DOI: 10.1016/j.saa.2017.08.006

Abstract

We measure the backward fluorescence spectra generated by the femtosecond filament transmitting through the butane/air flame, and study the fluorescence emission from combustion intermediates (CN, CH and C₂ radicals), air (mainly N₂ and N₂⁺). It is found that the fluorescence emission from combustion intermediates, N₂ and N₂⁺ shows difference when the femtosecond filament transmits through different parts of the butane/air flame, and we attempt to analyze it in this paper. This study demonstrates that the filament-induced fluorescence technique can be utilized to sense the combustion intermediates.

Keywords: Combustion; Femtosecond filament; Fluorescence; Remote sensing.