Journal Published Online: 01 May 1991
Volume 36, Issue 3

An Evaluation of the Use of Laser-Induced Infrared Luminescence to Differentiate Writing Inks

CODEN: JFSCAS

Abstract

An examination of 56 inks with an argon-ion laser revealed the laser will sometimes stimulate infrared luminescence in inks which did not produce infrared luminescence under the video spectral comparator (VSC-1). This infrared luminescence was always at a higher range (usually 830 to 900 nm) than that found under the VSC-1. This indicates that laser-induced infrared luminescence may be a useful tool in differentiating between inks which otherwise appear similar.

Author Information

Horton, RA
U.S. Army Crime Laboratory (USACIL-CONUS), Ft. Gillem, GA
Nelson, LK
U.S. Army Crime Laboratory (USACIL-CONUS), Ft. Gillem, GA
Pages: 6
Price: $25.00
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Stock #: JFS13093J
ISSN: 0022-1198
DOI: 10.1520/JFS13093J