Utilization of Ir Laser Pumped Anti-Stokes Emission of Er-Yb Doped Systems for Identification of Securities |
| A.N. Kuzmin, G.I. Ryabtsev, G.A. Ketko Institute of Physics, Belarussian Academy of Sciences, Minsk, Belarus A.Ya. Gorelenko, A.A. Demidovich Science Center "Gosznak" of Belarus, Minsk, Belarus W. Stręk, K. Maruszewicz and P. Dereń Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-950 Wrocław, Poland |
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| In this paper we present a utilization of anti-Stokes luminescence of Er-Yb systems for identifications of securities. A simple method of detection of an up-conversion phenomenon in such system by means of IR laser operating in the region 960-1010 nm is proposed. |
| DOI: 10.12693/APhysPolA.90.423 PACS numbers: 78.55.Hx |