Title :
Counterfeit money detection by intrinsic fluorescence lifetime
Author :
Levene, Michael J. ; Chia, Thomas
Author_Institution :
Dept. of Biomed. Engieering, Yale Univ., New Haven, CT, USA
Abstract :
Genuine U.S. Federal Reserve Notes have a consistent, two-component intrinsic fluorescence lifetime. We used scanning two-photon laser excitation and the time-correlated single photon counting method to identify three different types of counterfeit U.S. paper money.
Keywords :
Biomedical measurements; Bleaching; Cotton; Counterfeiting; Fluorescence; Lifetime estimation; Microscopy; Optical imaging; Printing; Testing;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA, USA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
