Standoff High Energy Laser Induced Oxidation Spectroscopy (HELIOS)


  1. Daigle, J-F.
  2. Pudo, D.
  3. Théberge, F.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN)
High Energy Lasers (HELs) used for defense applications require operational distances ranging from few hundred meters to several kilometers. As the distance increases, the incident beam properties and, consequently, the anticipated effect delivered to the sample become less predictable. Therefore, the direct observation of the event induced by the laser can become an asset. In this paper, we propose a novel spectroscopic method that analyses in real time the spectral components present in the flames produced during the interaction of a HEL with a metallic piece at a long distance. This method was used on aluminum and carbon steel samples placed 200m away from the laser system. It was discovered that the aluminum and iron oxides created as a by-product of the HEL reaction with the samples emitted clear fingerprint signatures that could be detected remotely using a spectroscopic receiver placed beside the HEL beam director. The real-time assessment of the laser-induced effect can be achieved by monitoring the temporal evolution of the oxide signatures, hence providing information to the operator about the reaction and the nature of the sample illuminated.
High energy laser;Spectroscopy;metal
Report Number
DRDC-RDDC-2017-P092 — External Literature
Date of publication
01 Nov 2017
Number of Pages
Reprinted from
American Institute of Physics Journal of Applied Physics, Issue: 122, 173102 (2017)
Electronic Document(PDF)

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