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13 June 2019 Assembly process and optical performances for a golden laser spark-plug device
Pol Ribes-Pleguezuelo, Nicolaie Pavel, Erik Beckert, Christoph Damm, Axel Bodemann, Oana-Valeria Grigore, Gabriela Croitoru, Catalina-Alice Brandus, Nicolae-Tiberius Vasile, Ramona Eberhardt, Andreas Tünnermann
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Optical Engineering, Vol. 58, Issue 6, 065101 (June 2019). https://doi.org/10.1117/1.OE.58.6.065101
Abstract
The low-stress Solderjet Bumping technique was employed to assemble the optical components of an increased-robustness laser spark-plug ignition device using the low melting alloys 96.5Sn3Ag0.5Cu and 80Au20Sn. A finite-element-method analysis, optical simulations, and a soldering parametrization test were performed to prove that different optical materials (sapphire, ECO-550, D-ZLaF52LA, TAC4, and N-SF11 glasses) could be fastened to the stainless steel body. The assembled spark-plug device featured a passively Q-switched Nd  :  YAG/Cr4  +    :  YAG composite ceramic medium and delivered laser pulses with energy variable between 2.40 and 4.70 mJ, with 0.8 ns duration, suitable for inducing air breakdown phenomenon and engine combustion.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Pol Ribes-Pleguezuelo, Nicolaie Pavel, Erik Beckert, Christoph Damm, Axel Bodemann, Oana-Valeria Grigore, Gabriela Croitoru, Catalina-Alice Brandus, Nicolae-Tiberius Vasile, Ramona Eberhardt, and Andreas Tünnermann "Assembly process and optical performances for a golden laser spark-plug device," Optical Engineering 58(6), 065101 (13 June 2019). https://doi.org/10.1117/1.OE.58.6.065101
Received: 11 March 2019; Accepted: 20 May 2019; Published: 13 June 2019
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Cited by 2 scholarly publications.
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KEYWORDS
YAG lasers
Lithium
Optical components
Pulsed laser operation
Sapphire
Combustion
Laser welding
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