论文信息 - Radiation defects in SrLaGa3O7 crystals doped with rare-earth elements

Radiation defects in SrLaGa3O7 crystals doped with rare-earth elements

Abstract Influence of γ and proton exposures on the optical absorption and photoluminescence of SrLaGa3O7 (SLGO) single crystals doped with Nd, Dy and Pr was studied. We observed that color centers, which appeared after the irradiation, shift the short-wave absorption edge towards the longer wavelengths by a few hundreds nm. They are probably attributed to the Ga2+ centers which are formed according to the reaction Ga3+ + e− → Ga2+ with a spin of S= 1 2 , g||=1.9838(5) and g⊥=2.0453(5).

[1] I. Pracka,et al. Czochralski growth of SrLaGa3O7:Pr3+ doped single crystals and their optical and lasing properties , 1997, Other Conferences.

[2] L. R. Black,et al. Laser Heated Pedestal Growth Of Nd-Doped Oxide Crystals For Diode Pumping , 1989, Defense, Security, and Sensing.

[3] E. Belokoneva,et al. crystal structure, absorption, luminescence properties, and stimulated emission of Ga gehlenite (Ca2–xNdxGa2+xSi1–xO7) , 1986 .

[4] I. Pracka,et al. The Czochralski growth of SrLaGa3O7 single crystals and their optical and lasing properties , 1994 .

[5] Marek Berkowski,et al. Effect of substitution of barium by strontium on optical properties of neodymium-doped XLaGa3O7 (X≡Ba,Sr) , 1992 .