Growth and optical properties of Pr~(3+):La_2CaB_(10)O_(19) crystal
来源期刊：JOURNAL OF RARE EARTHS2009年第6期
论文作者：WU Yicheng ZU Yanlei ZHANG Jianxiu FU Peizhen
Key words：Pr~(3+); La_2CaB_(10)O_(19) crystal; crystal growth; spectroscopic properties; rare earths;
Abstract: Pr~(3+) doped La_2CaB_(10)O_(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.
WU Yicheng1，ZU Yanlei1，ZHANG Jianxiu1，FU Peizhen1
(1.Beijing Center for Crystal Research and Development,Key Laboratory of Functional Crystals and Laser Technology,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,C)
Abstract:Pr~(3+) doped La_2CaB_(10)O_(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.
Key words:Pr~(3+); La_2CaB_(10)O_(19) crystal; crystal growth; spectroscopic properties; rare earths;
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