Comparison of Microscopic Mechanisms of Blue Anti-Stokes Luminescence in Undoped and Chromium Doped ZnSe Crystals |
| V.Yu. Ivanova, A. Omel'chukb and M. Godlewskia aInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland bDepartment of Physics, University of Dnepropetrovsk, 320625, Dnepropetrovsk, Ukraine |
| Full Text PDF |
| Anti-Stokes luminescence is observed in chromium doped and in undoped ZnSe crystals. In the former case anti-Stokes luminescence is due to two complementary ionization transitions of Cr ions. In the latter case two-photon absorption becomes important at a high excitation density. |
| DOI: 10.12693/APhysPolA.94.365 PACS numbers: 71.55.Gs, 78.55.Et, 76.30.Fc |