DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fiber laser coupled optical spark delivery system

Abstract

A spark delivery system for generating a spark using a laser beam is provided, and includes a laser light source and a laser delivery assembly. The laser delivery assembly includes a hollow fiber and a launch assembly comprising launch focusing optics to input the laser beam in the hollow fiber. The laser delivery assembly further includes exit focusing optics that demagnify an exit beam of laser light from the hollow fiber, thereby increasing the intensity of the laser beam and creating a spark. Other embodiments use a fiber laser to generate a spark. Embodiments of the present invention may be used to create a spark in an engine. Yet other embodiments include collecting light from the spark or a flame resulting from the spark and conveying the light for diagnostics. Methods of using the spark delivery systems and diagnostic systems are provided.

Inventors:
 [1];  [1];  [1];  [1];  [1]
  1. Fort Collins, CO
Issue Date:
Research Org.:
Colorado State University Research Foundation (Fort Collins, CO)
Sponsoring Org.:
USDOE
OSTI Identifier:
970541
Patent Number(s):
7340129
Application Number:
11/197,832
Assignee:
Colorado State University Research Foundation (Fort Collins, CO)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02P - IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES
DOE Contract Number:  
FC26-02NT41335
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Yalin, Azer, Willson, Bryan, Defoort, Morgan, Joshi, Sachin, and Reynolds, Adam. Fiber laser coupled optical spark delivery system. United States: N. p., 2008. Web.
Yalin, Azer, Willson, Bryan, Defoort, Morgan, Joshi, Sachin, & Reynolds, Adam. Fiber laser coupled optical spark delivery system. United States.
Yalin, Azer, Willson, Bryan, Defoort, Morgan, Joshi, Sachin, and Reynolds, Adam. Tue . "Fiber laser coupled optical spark delivery system". United States. https://www.osti.gov/servlets/purl/970541.
@article{osti_970541,
title = {Fiber laser coupled optical spark delivery system},
author = {Yalin, Azer and Willson, Bryan and Defoort, Morgan and Joshi, Sachin and Reynolds, Adam},
abstractNote = {A spark delivery system for generating a spark using a laser beam is provided, and includes a laser light source and a laser delivery assembly. The laser delivery assembly includes a hollow fiber and a launch assembly comprising launch focusing optics to input the laser beam in the hollow fiber. The laser delivery assembly further includes exit focusing optics that demagnify an exit beam of laser light from the hollow fiber, thereby increasing the intensity of the laser beam and creating a spark. Other embodiments use a fiber laser to generate a spark. Embodiments of the present invention may be used to create a spark in an engine. Yet other embodiments include collecting light from the spark or a flame resulting from the spark and conveying the light for diagnostics. Methods of using the spark delivery systems and diagnostic systems are provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {3}
}

Works referenced in this record:

Optical properties of small-bore hollow glass waveguides
journal, January 1995


Picosecond air breakdown studies at 0.53 μm
journal, August 1983


100-W average-power, high-energy nanosecond fiber amplifier
journal, October 2002


Spatial and temporal profiles of pulsed laser-induced air plasma emissions
journal, October 2000


Formaldehyde Formation in Large Bore Natural Gas Engines Part 1: Formation Mechanisms
journal, December 1999


Computational Modeling of Natural Gas Injection in a Large Bore Engine
journal, July 2004


Formaldehyde Formation in Large Bore Engines Part 2: Factors Affecting Measured CH2O
journal, December 1999


Single-mode operation of a coiled multimode fiber amplifier
journal, January 2000


Optical fiber transmission of multipleQ-switch Nd: YAG laser pulses with microsecond interpulse separations
journal, October 1996


Characterization of aberrated laser beams
journal, January 1997


Laser ignition of methane–air mixtures at high pressures
journal, April 2003


Dependence of Minimum Ignition Energy on Ignition Parameters
journal, September 1990


High-peak-power, pulsed CO_2 laser light delivery by hollow glass waveguides
journal, January 1997


High Power Fiber Lasers
journal, January 2004


Transmission of kilowatt-class CO_2 laser light through dielectric-coated metallic hollow waveguides for material processing
journal, January 1992


Laser Spark Ignition of a Blended Hydrogen-Natural Gas Fueled Single Cylinder Engine
conference, September 2008

  • Richardson, Steven W.; McMillian, Michael H.; Woodruff, Steven D.
  • ASME 2006 Internal Combustion Engine Division Spring Technical Conference (ICES2006)
  • https://doi.org/10.1115/ICES2006-1397

Energy Requirements for Spherical Ignitions in Methane-Air Mixtures at Different Equivalence Ratios
journal, September 1990


Numerical simulation of spark ignition including ionization
journal, January 2000


Silver-coated hollow-glass waveguide for applications at 800 nm
journal, January 2002


Combustion at the focus: laser diagnostics and control
journal, January 2005


The influence of flow parameters on minimum ignition energy and quenching distance
journal, January 1975


High‐power Nd:glass laser transmission through optical fibers and its use in acceleration of thin foil targets
journal, April 1990


Laser induced breakdown of Ar, N 2 and O 2 gases using 1.064, 0.532, 0.355 and 0.266μm radiation
journal, December 1996


Laser-induced spark ignition of CH4/air mixtures
journal, November 1999


Fundamentals of high-energy spark ignition with lasers
journal, July 2004


Analysis of optical damage mechanisms in hollow-core waveguides delivering nanosecond pulses from a Q-switched Nd:YAG laser
journal, January 2006


Laser versus conventional ignition of flames
journal, February 1994


Combustion control using a multiplexed diode-laser sensor system
conference, February 2013


Interpretation of optical emissions for sensors in liquid fueled combustors
conference, February 2013


From Spark Ignition to Flame Initiation
journal, January 1995


Initiation and propagation of flame fronts in lean CH4-air mixtures by the three modes of the ignition spark
journal, January 1979


Selecting a high-power fiber-optic laser beam delivery system
conference, January 1996

  • Hunter, Boyd V.; Leong, Keng H.; Miller, Carl B.
  • ICALEO® ‘96: Proceedings of the Laser Materials Processing Conference, International Congress on Applications of Lasers & Electro-Optics
  • https://doi.org/10.2351/1.5059077

Modeling the Initial Growth of the Plasma and Flame Kernel in S.I. Engines
conference, March 2020

  • Willems, Hilde; Sierens, Roger
  • ASME 2001 Internal Combustion Engine Division Spring Technical Conference, Volume 2: In-Cylinder Processes: Fuel Spray, Flow, Ignition, Combustion, and Emission Formation
  • https://doi.org/10.1115/ICES2001-114

Detailed chemical kinetic models for the combustion of hydrocarbon fuels
journal, January 2003


Analytical and Computational Modeling of High Pressure Gas Injection
conference, March 2020

  • Kirkpatrick, Allan; Li, Yuan; Mitchell, Charles
  • ASME 2001 Internal Combustion Engine Division Fall Technical Conference, Volume 2: Large-Bore Engines, Fuel Effects, Homogeneous Charge Compression Ignition, Engine Performance and Simulation
  • https://doi.org/10.1115/2001-ICE-410

Performance Analysis of a Natural Gas Generator Using Laser Ignition
conference, December 2008


Photochemical Ignition of Premixed Hydrogen/Oxygen Mixtures With ArF Laser
journal, January 1994


Lean Flammability Limit and Minimum Spark Ignition Energy. Commercial Fluids and Pure Hydrocarbons.
journal, December 1951


Laser breakdown with millijoule trains of picosecond pulses transmitted through a hollow-core photonic-crystal fibre
journal, May 2003


Possibility of Initiation of Combustion of CH 4 –O 2 (Air) Mixtures with Laser-Induced Excitation of O 2 Molecules
journal, September 2004


Laser induced gas breakdown: A bibliographical review
journal, April 1969


Numerical simulation of front lobe formation in laser-induced spark ignition of CH4/air mixtures
journal, January 2002


Time-resolved imaging of flame kernels: Laser spark ignition of H2/O2/Ar mixtures
journal, August 1995


Temporal and Spatial Evolution of a Laser Spark in Air
journal, September 2005


Pulsed laser damage to optical fibers
journal, January 1985


Launch conditions and mode coupling in hollow-glass waveguides
journal, September 1998


Measurement of KrF laser breakdown threshold in gases
journal, January 1997


Laser-induced breakdown in nitrogen and the rare gases at 0.53 and 0.357μm
journal, October 1987


Laser-induced two-point ignition of premixture with a single-shot laser
journal, March 2001


Criteria for turbulent propagation limits of premixed flames
journal, October 1985


Visualization of laser-induced breakdown and ignition
journal, January 2001


Hollow-waveguide-based transmission of a Q-switched Nd:YAG laser beam for biological tissue ablation
conference, April 1999


Ultraviolet Laser Ignition of Premixed Gases by Efficient and Resonant Multiphoton Photochemical Formation of Microplasmas
journal, March 1987


Dependence of stimulated Brillouin scattering in multimode fibers on beam quality, pulse duration, and coherence length
journal, January 2003


Laser Ignition of Methane-Air Mixtures at High Pressures and Diagnostics
journal, January 2005


Laser spark ignition and extinction of a methane‐air diffusion flame
journal, April 1981


An experimental and numerical study of laser-induced spark in air
journal, February 2005


In situ investigation of laser-induced ignition and the early stages of methane–air combustion at high pressures using a rapidly tuned diode laser at 2.55 μm
journal, November 2003


Observation and simulation of laser induced ignition processes in O2−O3 and H2−O2 mixtures
journal, January 1988


New simplified coupling scheme for the delivery of 20 MW Nd:YAG laser pulses by large core optical fibers
journal, January 2001


Laser induced spark ignition of methane-oxygen mixtures
conference, February 2013


A numerical investigation of the dependence of the threshold irradiance on the wavelength in laser-induced breakdown in
journal, January 1999


Fluid dynamics effects following laser-induced optical breakdown
conference, February 2013


Computational fluid-dynamic model of laser-induced breakdown in air
journal, January 2003


Pulse-width and focal-volume dependence of laser-induced breakdown
journal, March 1981


Laser-induced ignition using a conical cavity in CH4–air mixtures
journal, December 1999


Spectroscopic investigation of laser-initiated low-pressure plasmas in atmospheric gases
journal, January 1983


Hollow fibers for delivery of harmonic pulses of Q-switched Nd:YAG lasers
journal, January 2002


Turbulent flame propagation and combustion in spark ignition engines
journal, January 1983


Low order multimode generation in hollow glass waveguides
journal, January 1996


Laser Spark Ignition: Laser Development and Engine Testing
conference, December 2008


Hollow-fiber delivery of high-power pulsed Nd:YAG laser light
journal, January 1998


Near-Ultraviolet Evanescent-Wave Absorption Sensor Based on a Multimode Optical Fiber
journal, April 1998


CO 2 ‐laser‐induced deflagration of fuel/oxygen mixtures
journal, January 1983


Application of high energy ignition systems to engines
journal, January 1997


What Limits Lean Operation in Spark Ignition Engines-Flame Initiation or Propagation?
conference, October 1976


Threshold dependence of laser‐induced optical breakdown on pulse duration
journal, March 1995


Spark ignition of turbulent methane/air mixtures revealed by time-resolved planar laser-induced fluorescence and direct numerical simulations
journal, January 2000


How to (Maybe) Measure Laser Beam Quality
conference, January 1998


Measurement of beam quality degradation due to spherical aberration in a simple lens
journal, June 1994


Laser ignition of ultra-lean methane/hydrogen/air mixtures at high temperature and pressure
journal, June 2005


Characterization of laser-induced ignition of biogas–air mixtures
journal, September 2004


Laser-induced plasma formation in Xe, Ar, N_2, and O_2 at the first four Nd:YAG harmonics
journal, January 1991


A new ignition model for spark-ignited engine simulations
journal, January 2001


Optical breakdown in fused silica and argon gas: application to Nd:YAG laser limiter
journal, January 2003


Output beam propagation and beam quality from a multimode stable-cavity laser
journal, April 1993


Effects of energy deposition schedule on minimum ignition energy in spark ignition of methane/air mixtures
journal, January 2002


Spark ignition and the early stages of turbulent flame propagation
journal, July 1987


Laser-Induced Breakdown Spectroscopy for On-Line Engine Equivalence Ratio Measurements
journal, September 2003


Laser Ignition: A New Concept to Use and Increase the Potentials of Gas Engines
conference, November 2008


Mechanism of flame kernel formation produced by short duration sparks
journal, January 1989


Numerical modeling of spark ignition and flame initiation in a quiescent methane-air mixture
journal, December 1994


Laser‐induced breakdown studies of laboratory air at 0.266, 0.355, 0.532, and 1.06 μm
journal, September 1991


Laser-induced breakdown of gases
journal, May 1975


Improved hollow-core photonic crystal fiber design for delivery of nanosecond pulses in laser micromachining applications
journal, January 2005


Development of an Open Path Laser Ignition System for a Large Bore Natural Gas Engine: Part 2 — Single Cylinder Demonstration
conference, November 2008


Computational Modeling of Localized Laser Energy Deposition in Quiescent Air
conference, June 2012


Laser-induced spark ignition fundamental and applications
journal, May 2006


Development of a Fiber Delivered Laser Ignition System for Natural Gas Engines
conference, September 2008


Flame photographs in a spark-ignition engine
journal, April 1984


Beam delivery by large-core fibers: effect of launching conditions on near-field output profile
journal, January 1992


Real-Time Laser Spark Spectroscopy of Particulates in Combustion Environments
journal, August 1989


Development of Advanced Laser Ignition System for Stationary Natural Gas Reciprocating Engines
conference, November 2008


Laser Ignited Internal Combustion Engine - An Experimental Study
conference, February 1978

  • Dale, J. D.; Smy, P. R.; Clements, R. M.
  • 1978 Automotive Engineering Congress and Exposition, SAE Technical Paper Series
  • https://doi.org/10.4271/780329

Fabrication, modeling, and direct evanescent field measurement of tapered optical fiber sensors
journal, April 1999


Design and Development of Waukesha’s Stoichiometric, Cooled EGR Engine for the California ARICE Program
conference, November 2008


Laser spark ignition of chemically reactive gases.
journal, February 1969


Fibre optic beam delivery system for high peak power laser PIV illumination
journal, January 1999


Laser-generated spark morphology and temperature records from emission and Rayleigh scattering studies
journal, January 2003


Laser Ignition of Natural Gas Engines Using Fiber Delivery
conference, November 2008


Energy deposition in supersonic flows
conference, February 2013