Reference EntryDOI
5 Laser Ignition
TLDR
In this article, the authors proposed a hot gas model for laser-induced gas breakdown and evolution in high-speed and highly turbulent streams, and developed a Diode-Powered solid state laser for laser ignition.Abstract:
The sections in this article are
5.1
Introduction
5.2
Laser Ignition Energy
5.3
Breakdown Threshold Laser Energy
5.3.1
Multiphoton Ionization
5.3.2
Cascade Breakdown Ionization
5.4
Spark Evolution
5.5
Ignition Mechanism
5.5.1
Homogeneous Hot-Gas Model
5.5.2
Blast Wave Ignition Model
5.5.3
A Hot Gas Model
5.6
Potential Applications and Research Needs
5.6.1
Laser-Induced Gas Breakdown and Evolution in High-Speed and Highly Turbulent Streams
5.6.2
Laser Ignition for Stabilization of Ultra-Lean and High Speed Combustion Applications
5.6.3
Laser Ignition under Engine and/or Engine-Like Conditions
5.6.4
Development of a Diode-Pumped Solid State Laser for Laser Ignition Applications
5.7
Conclusions
Keywords:
gas turbine engines;
fuel-lean flame;
jet engines;
laser ignition;
modeling;
spark evolutionread more
References
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Journal ArticleDOI
Characterisation of laser ignition in hydrogen–air mixtures in a combustion bomb
Dhananjay Kumar Srivastava,Martin Weinrotter,Kurt Friedrich Iskra,Avinash Kumar Agarwal,Ernst Wintner +4 more
TL;DR: In this paper, a laser-induced spark ignition of lean hydrogen-air mixtures was experimentally investigated using nanosecond pulses generated by Q-switched Nd:YAG laser at initial pressure of 3 MPa and temperature 323 K in a constant volume combustion chamber.
Journal ArticleDOI
Photochemical Ignition of Premixed Hydrogen/Oxygen Mixtures With ArF Laser
TL;DR: In this paper, an ArF excimer laser with focused optics was used to photodissociate molecular oxygen in hydrogen/oxygen mixtures, producing ground-state atomic oxygen, O(3P).
Proceedings ArticleDOI
Laser-Stimulated Ignition in a Homogeneous Charge Compression Ignition Engine
TL;DR: A laser-induced spark was generated inside the combustion chamber of a reciprocating engine running in homogeneous charge compression Ignition (HCCI) mode to investigate the influence of the plasma.
Proceedings ArticleDOI
Combustion Bomb Tests of Laser Ignition
Robert Hickling,William R. Smith +1 more
TL;DR: In this article, the power density required to produce laser induced sparks is investigated and a range of fuels comprising isooctane, cyclohexane, n-hexane and clear indolene, and No. 1 diesel fuel.
Journal ArticleDOI
Picosecond air breakdown studies at 0.53 μm
TL;DR: In this paper, the breakdown threshold of laboratory air at 0.53 μm was measured for pulses varying from 30 to 140 ps for a variety of focal spot sizes, where tp is the laser pulse width.