Abstract
Pr 3+ doped La 2CaB 10O 19 crystal were grown by the top-seeded solution growth (TSSG) method. The absorption spectra, emission spectra and lifetime were measured at room temperature. The J-O parameters (Ω t , t=2,4,6), the radiative transition probabilities A J, J' , oscillator strengths P J, J' , radiative lifetime τ, fluorescence branch ratios β J and the value of integrated emission cross section have also been calculated. Five main absorption bands, 3H 4 to 3P 1+ 3P 2, 3P 0, 1D 2, 3F 3 + 3F 4 and 3F 2, were observed in the absorption spectra. The 1G 4 absorption band was not observed. A very strong emission band at 601 nm ( 1D 2 → 3H 4) was observed in the emission spectra. The experimental lifetime for this level was compared with that obtained theoretically by using J-O approach.
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