Lasers and Laser Optics

Novel miniaturized high-energy Nd-YAG laser for spark ignition in internal combustion engines

[+] Author Affiliations
Gerhard Kroupa

CTR Carinthian Tech Research AG, Europastrasse 4/1, 9524 Villach, Austria

Georg Franz

CTR Carinthian Tech Research AG, Europastrasse 4/1, 9524 Villach, Austria

Ernst Winkelhofer

AVL List GmbH, Hans-List-Platz 1, 8020 Graz, Austria

Opt. Eng. 48(1), 014202 (January 26, 2009). doi:10.1117/1.3072958
History: Received April 17, 2008; Revised December 05, 2008; Accepted December 05, 2008; Published January 26, 2009
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A robust, miniaturized, diode-pumped high-energy neodymium doped yttrium aluminium garnet (Nd:YAG) laser with passive Q-switch generating 25mJ at 3ns has been demonstrated at repetition rates of up to 150Hz. 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.

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© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Gerhard Kroupa ; Georg Franz and Ernst Winkelhofer
"Novel miniaturized high-energy Nd-YAG laser for spark ignition in internal combustion engines", Opt. Eng. 48(1), 014202 (January 26, 2009). ; http://dx.doi.org/10.1117/1.3072958


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