Femtosecond laser filamentation for sensing combustion intermediates: A comparative study

被引：26

作者：

Li, He-Long ^{[1
]}

Wei, Xiang-Ye ^{[1
]}

Xu, Huai-Liang ^{[1
]}

Chin, See-Leang ^{[2
,3
]}

Yamanouchi, Kaoru ^{[4
]}

Sun, Hong-Bo ^{[1
,5
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[2] Univ Laval, Dept Phys, Quebec City, PQ G1V 0A6, Canada

[3] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1V 0A6, Canada

[4] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan

[5] Jilin Univ, Coll Phys, Changchun 130012, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 203卷

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

Femtosecond laser filament; Fluorescence; Laser sensing; Combustion;

D O I：

10.1016/j.snb.2014.06.086

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We demonstrate experimental evidences that femtosecond filament-induced clean fingerprint fluorescence can indeed be employed to characterize the combustion intermediates in flames. By comparing the emission spectra obtained from an ethanol-air flame by femtosecond filament excitation, nanosecond laser-breakdown excitation, as well as without any laser excitation, it is found that the filament-induced fluorescence in the combustion flame mainly results from the interaction of femtosecond laser pulses with the combustion intermediates such as OH, CH, and C-2 existing in the combustion, but not from the fragmentation of parent ethanol molecules. (C) 2014 Elsevier B. V. All rights reserved.

引用

页码：887 / 890

页数：4

共 15 条

[1] Laser filaments generated and transmitted in highly turbulent air [J].