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The SrB2O4 single crystal doped with 0.5at% of europium has been grown by the Czochralski method. The Eu2+ broad emission in bulk crystal has been observed, upon excitation by a femtosecond laser. However, the efficiency of this emission does not exceed a value of 23% at 5K, assessed in the frame of the Inokuti–Hirayama model. The critical distance R0 was calculated to be 20.6Å, Cda 5.40×10−45m6/s...
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