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Title: Fiber coupled optical spark delivery system

A spark delivery system for generating a spark using a laser beam is provided, the spark delivery system including 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. In addition, the laser delivery assembly 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. In accordance with embodiments of the present invention, the assembly may be used to create a spark in a combustion engine. In accordance with other embodiments of the present invention, a method of using the spark delivery system is provided. In addition, a method of choosing an appropriate fiber for creating a spark using a laser beam is also presented.
Authors:
 [1] ;  [1] ;  [1]
  1. (Fort Collins, CO)
Publication Date:
OSTI Identifier:
985507
Report Number(s):
7,412,129
US patent application 11/126,908; TRN: US201016%%1985
DOE Contract Number:
FC26-02NT41335
Resource Type:
Patent
Research Org:
NETL (National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV (United States))
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; OPTICAL FIBERS; FOCUSING; LASERS; DESIGN; SPARK IGNITION ENGINES; IGNITION SYSTEMS