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Optical Engineering

Novel miniaturized high-energy Nd-YAG laser for spark ignition in internal combustion engines
Author(s): Gerhard Kroupa; Georg Franz; Ernst Winkelhofer
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Paper Abstract

A robust, miniaturized, diode-pumped high-energy neodymium doped yttrium aluminium garnet (Nd:YAG) laser with passive Q-switch generating 25 mJ at 3 ns has been demonstrated at repetition rates of up to 150 Hz. The device is designed for ignition of fuel air mixtures in internal combustion engines. The pump diodes and Peltier cooling are integrated in the laser head, giving a compact design with a small number of optical components for easy assembly. The laser was successfully operated as an optical spark plug on a test engine at high temperature and vibration levels.

Paper Details

Date Published: 1 January 2009
PDF: 5 pages
Opt. Eng. 48(1) 014202 doi: 10.1117/1.3072958
Published in: Optical Engineering Volume 48, Issue 1
Show Author Affiliations
Gerhard Kroupa, Carinthian Tech Research AG (Austria)
Georg Franz, Carinthian Tech Research AG (Austria)
Ernst Winkelhofer, AVL LIST GmbH (Germany)

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