Optical properties of Dy:YCa4O(BO3)3 crystal grown by the Czochralski technique

Abstract

Abstract Dy3+-doped YCa4O(BO3)3 (Dy:YCOB) crystal was successfully grown by the Czochralski technique. The absorption cross section at 453 nm was 0.28 × 10–21 cm2, that is related to the 6H15/2 → 4I15/2 transition. The Judd-Ofelt parameters Ωt (t = 2, 4, 6) were 1.62 × 10–20, 0.10 × 10–20, 0.41 × 10–20 cm2, respectively. The emission cross section assigned to the transition 4F9/2 → 6H13/2 was 1.02 × 10–21 cm2. The 4F9/2 energy level’s fluorescence lifetime was 900 μs.