Robust and ultralow-energy-threshold ignition of a lean mixture by an ultrashort-pulsed laser in the filamentation regime

doi:10.1038/s41377-021-00496-8

	Robust and ultralow-energy-threshold ignition of a lean mixture by an ultrashort-pulsed laser in the filamentation regime
	Zang, Hongwei 1; Li, Helong 1,2; Zhang, Wei 1; Fu, Yao 1; Chen, Shanming 1; Xu, Huailiang 1,3; Li, Ruxin3,4,5
	2021-03-05
发表期刊	LIGHT-SCIENCE & APPLICATIONS (IF:20.6[JCR-2023],20.3[5-Year])
ISSN	2047-7538
卷号	10 期号:1
发表状态	已发表
DOI	10.1038/s41377-021-00496-8
摘要	Laser ignition (LI) allows for precise manipulation of ignition timing and location and is promising for green combustion of automobile and rocket engines and aero-turbines under lean-fuel conditions with improved emission efficiency; however, achieving completely effective and reliable ignition is still a challenge. Here, we report the realization of igniting a lean methane/air mixture with a 100% success rate by an ultrashort femtosecond laser, which has long been regarded as an unsuitable fuel ignition source. We demonstrate that the minimum ignition energy can decrease to the sub-mJ level depending on the laser filamentation formation, and reveal that the resultant early OH radical yield significantly increases as the laser energy reaches the ignition threshold, showing a clear boundary for misfire and fire cases. Potential mechanisms for robust ultrashort LI are the filamentation-induced heating effect followed by exothermal chemical reactions, in combination with the line ignition effect along the filament. Our results pave the way toward robust and efficient ignition of lean-fuel engines by ultrashort-pulsed lasers.
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收录类别	SCI ; EI ; SCIE
语种	英语
WOS研究方向	Optics
WOS类目	Optics
WOS记录号	WOS:000626543200002
出版者	SPRINGERNATURE
WOS关键词	INDUCED SPARK-IGNITION ; METHANE-AIR MIXTURES ; FEMTOSECOND ; STABILIZATION ; IONIZATION ; COMBUSTION ; MOLECULES ; PROFILES ; PLASMA ; FLAME
原始文献类型	Letter
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/126098
专题	物质科学与技术学院物质科学与技术学院_特聘教授组_李儒新组
通讯作者	Xu, Huailiang; Li, Ruxin
作者单位	1.Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China; 2.Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China; 3.CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China; 4.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China; 5.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Zang, Hongwei,Li, Helong,Zhang, Wei,et al. Robust and ultralow-energy-threshold ignition of a lean mixture by an ultrashort-pulsed laser in the filamentation regime[J]. LIGHT-SCIENCE & APPLICATIONS,2021,10(1).
APA	Zang, Hongwei.,Li, Helong.,Zhang, Wei.,Fu, Yao.,Chen, Shanming.,...&Li, Ruxin.(2021).Robust and ultralow-energy-threshold ignition of a lean mixture by an ultrashort-pulsed laser in the filamentation regime.LIGHT-SCIENCE & APPLICATIONS,10(1).
MLA	Zang, Hongwei,et al."Robust and ultralow-energy-threshold ignition of a lean mixture by an ultrashort-pulsed laser in the filamentation regime".LIGHT-SCIENCE & APPLICATIONS 10.1(2021).