Fiber laser coupled optical spark delivery system

Yalin, Azer; Willson, Bryan; Defoort, Morgan; Joshi, Sachin; Reynolds, Adam

Title: Fiber laser coupled optical spark delivery system

Patent · Tue Mar 04 00:00:00 EST 2008

OSTI ID:970541

Yalin, Azer ^[1]; Willson, Bryan ^[1]; Defoort, Morgan ^[1]; Joshi, Sachin ^[1]; Reynolds, Adam ^[1]

Fort Collins, CO

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.

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Research Organization:: Colorado State University Research Foundation (Fort Collins, CO)

Sponsoring Organization:: USDOE

DOE Contract Number:: FC26-02NT41335

Assignee:: Colorado State University Research Foundation (Fort Collins, CO)

Patent Number(s):: 7,340,129

Application Number:: 11/197,832

OSTI ID:: 970541

Country of Publication:: United States

Language:: English

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