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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 31 — Nov. 1, 2008
  • pp: G15–G20

Chemical taggant detection and analysis by laser-induced breakdown spectroscopy

Steven H. Wise and Jose R. Almirall  »View Author Affiliations

Applied Optics, Vol. 47, Issue 31, pp. G15-G20 (2008)

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A commercially available chemical identification taggant that imparts a unique elemental fingerprint to any object and can be analytically distinguished from billions of possible combinations has been developed. The liquid tag is easily applied and, once dry, can be removed and analyzed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to determine the combination of elements present in the sample. The current study investigates the use of laser-induced breakdown spectroscopy (LIBS) as an alternative, and perhaps more practical, analysis scheme to LA-ICP-MS for this taggant. LIBS provides excellent discrimination potential, sensitivity, and repeatability of analysis for up to 17 rare-earth elements using a Nd:YAG 266 nm or 1064 nm laser and an intensified CCD detector.

© 2008 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(160.5690) Materials : Rare-earth-doped materials
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

Original Manuscript: March 31, 2008
Manuscript Accepted: June 6, 2008
Published: July 22, 2008

Steven H. Wise and Jose R. Almirall, "Chemical taggant detection and analysis by laser-induced breakdown spectroscopy," Appl. Opt. 47, G15-G20 (2008)

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