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首页> 外文期刊>Optical Materials >Spectroscopy of Tb~(3+) ions in monoclinic KLu(WO_4)_2 crystal application of an intermediate configuration interaction theory
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Spectroscopy of Tb~(3+) ions in monoclinic KLu(WO_4)_2 crystal application of an intermediate configuration interaction theory

机译:单斜KLu(WO_4)_2晶体中Tb〜(3+)离子的光谱学和中间构型相互作用理论的应用

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The spectroscopic properties of Tb3+ ions in monoclinic KLu(WO4)(2) double tungstate crystal are studied with polarized light. The absorption spectra in the visible, near- and mid-IR including the transitions to all lower-lying F-7(J) (J = 0 ... 5) excited states are measured. The maximum absorption cross-section for the F-7(6) -> D-5(4) transition is 3.42 x 10(-21) cm(2) at 486.7 nm for light polarization E vertical bar vertical bar N-m. The transition probabilities for Tb3+ ions are calculated within the Judd-Ofelt theory modified for the case of an intermediate configuration interaction (ICI). The radiative lifetime of the D-5(4) state is 450 mu s and the luminescence quantum yield is >90%. The polarized stimulated-emission cross-section spectra for all D-5(4) F-7(J) (J = 0 ... 6) emission channels are evaluated. The maximum sigma(SE) is 11.4 x 10(-21) cm(2) at 549.4 nm (for E vertical bar vertical bar N-m). Tb3+:KLu(WO4)(2) features high transition cross -sections for polarized light being promising for color tunable visible lasers and imaging. (C) 2018 Elsevier B.V. All rights reserved.
机译:用偏振光研究了单斜KLu(WO4)(2)双钨酸盐晶体中Tb3 +离子的光谱性质。测量了在可见,近红外和中红外的吸收光谱,包括向所有较低F-7(J)(J = 0 ... 5)激发态的跃迁。 F-7(6)→D-5(4)跃迁的最大吸收横截面在486.7 nm处为E垂直条形垂直条形N-m,在3.46.7 nm处为3.42 x 10(-21)cm(2)。 Tb3 +离子的跃迁概率是在Judd-Ofelt理论中针对中间构型相互作用(ICI)进行计算的。 D-5(4)态的辐射寿命为450μs,发光量子产率> 90%。评估了所有D-5(4)F-7(J)(J = 0 ... 6)发射通道的偏振激发发射截面光谱。在549.4 nm处,最大sigma(SE)为11.4 x 10(-21)cm(2)(对于E垂直条垂直条N-m)。 Tb3 +:KLu(WO4)(2)的特征是偏振光的高过渡截面,有望用于彩色可调可见激光和成像。 (C)2018 Elsevier B.V.保留所有权利。

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