Femtosecond Laser Filamentation for Combustion Diagnostics

2016 ◽  
Author(s):  
Huailiang Xu
Keyword(s):  
Femtosecond Laser ◽  
Combustion Diagnostics ◽  
Laser Filamentation

scholarly journals Equivalence Ratio Measurements in CH4/Air Gases Based on the Spatial Distribution of the Emission Intensity of Femtosecond Laser-Induced Filament

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 2022
Author(s):  
Ming Li ◽  
Jiangpeng Gu ◽  
Dayuan Zhang ◽  
Qiang Gao ◽  
Bo Li
Keyword(s):  
Spatial Distribution ◽  
Flow Field ◽  
Femtosecond Laser ◽  
Emission Intensity ◽  
Equivalence Ratio ◽  
Femtosecond Lasers ◽  
Diagnostic Techniques ◽  
Spatially Resolved ◽  
Combustion Diagnostics ◽  
Laser Filamentation

Femtosecond lasers have been used in combustion diagnostics. Based on the characteristics of femtosecond laser filamentation, many diagnostic techniques have been developed. Here, we propose a method, based on femtosecond laser filamentation, for equivalence ratio measurements in CH4/air gases. By measuring the spatially resolved spectra of the femtosecond laser-induced filament, we found that the variation of the equivalence ratio in the flow field would affect the spatial distribution of the emission intensity of femtosecond laser-induced filament. On this basis, the equivalence ratio was calibrated by using the relative spatial positions of N2 (337 nm) and C2 (516.5 nm) signals in the filament. This method overcomes the interference of local air disturbance, having lower measurement uncertainty.

Gaseous pre-lattice assisted supercontinuum enhancement of femtosecond laser filamentation

2021 ◽  
Vol 28 (7) ◽  
pp. 072303
Author(s):  
Yajun Guo ◽  
Jianji Wang ◽  
Xiaowei Song ◽  
Jingquan Lin
Keyword(s):  
Femtosecond Laser ◽  
Laser Filamentation

scholarly journals Spatial distribution of nitrogen fluorescence emission induced by femtosecond laser filamentation in air

2021 ◽  
Vol 70 (13) ◽  
pp. 134206
Author(s):  
Yun Zhang ◽  
Shuang Lin ◽  
Yun-Feng Zhang ◽  
He Zhang ◽  
Ming-Ying Chang ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Femtosecond Laser ◽  
Fluorescence Emission ◽  
Laser Filamentation

Clue to a thorough understanding of terahertz pulse generation by femtosecond laser filamentation

2018 ◽  
Vol 6 (4) ◽  
pp. 296 ◽  
Author(s):  
Jiayu Zhao ◽  
Weiwei Liu ◽  
Shichang Li ◽  
Dan Lu ◽  
Yizhu Zhang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Pulse Generation ◽  
Terahertz Pulse ◽  
Laser Filamentation

Fabrication of Millimeter-Scaled Holes by Femtosecond Laser Filamentation

2017 ◽  
Vol 44 (4) ◽  
pp. 0402012
Author(s):  
张艳杰 Zhang Yanjie ◽  
宋海英 Song Haiying ◽  
刘海云 Liu Haiyun ◽  
刘勋 Liu Xun ◽  
李维 Li Wei ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Filamentation

Intense broadband THz generation from femtosecond laser filamentation

2013 ◽  
Vol 11 (1) ◽  
pp. 011401-11406 ◽  
Author(s):  
Tie-Jun Wang Tie-Jun Wang ◽  
Shuai Yuan Shuai Yuan ◽  
Yanping Chen Yanping Chen ◽  
See Leang Chin See Leang Chin
Keyword(s):  
Femtosecond Laser ◽  
Thz Generation ◽  
Laser Filamentation

Ultrafast swelling and shrinking of soot in alkanol–air flames induced by femtosecond laser filamentation

2020 ◽  
Vol 212 ◽  
pp. 345-351
Author(s):  
Hongwei Zang ◽  
Yao Fu ◽  
Mengyao Hou ◽  
Helong Li ◽  
Kaoru Yamanouchi ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Swelling And Shrinking ◽  
Laser Filamentation
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