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Applied Physics Letters / Volume 88 / Issue 14 / INTERDISCIPLINARY AND GENERAL PHYSICS

Appl. Phys. Lett. 88, 144102 (2006); http://dx.doi.org/10.1063/1.2191952 (3 pages)

Pulsed laser ignition of reactive multilayer films

Yoosuf N. Picard1, David P. Adams2, Jeremy A. Palmer2, and Steven M. Yalisove1

1Department of Materials Science and Engineering, University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109-2136
2Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185

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(Received 14 December 2005; accepted 15 February 2006; published online 4 April 2006)

Nanostructured Al/Pt multilayer films were ignited by single pulse irradiation from a Ti:sapphire femtosecond laser system. Critical ignition fluences (0.9–22 J/cm2) required to initiate a self-propagating reaction were quantified for different multilayer designs. Multilayers with smaller bilayer thickness required relatively lower fluence for ignition. Ignition threshold fluence was also found to be 1.4–3.6 times higher for Al-capped multilayers than for Pt-capped multilayers. Ablation threshold fluences were measured for Al (860±70 mJ/cm2) and Pt (540±50 mJ/cm2) and related to the observed difference in ignition fluences for Al- and Pt-capped multilayers.

© 2006 American Institute of Physics

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KEYWORDS and PACS

Keywords

aluminium, platinum, multilayers, thin films, nanostructured materials, solid lasers, high-speed optical techniques, pulsed laser deposition

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2191952

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    J. Wang, E. Besnoin, A. Duckham, S. J. Spey, M. E. Reiss, O. M. Knio, M. Powers, M. Whitener, and T. P. Weihs, Appl. Phys. Lett. 83, 3987 (2003)APPLAB000083000019003987000001.

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    Y. Hirayama and M. Obara, J. Appl. Phys. 97, 064903 (2005)JAPIAU000097000006064903000001.


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