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Crystal growth, spectroscopic characterization, and eye-safe laser operation of erbium- and yfterbium-codoped KLu(WO4)(2)

机译:掺and和掺K的KLu(WO4)(2)的晶体生长,光谱表征和人眼安全的激光操作

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Erbium (Er)- and Ytterbium (Yb)-codoped monoclinic YLu(WO4)(2) single crystals were grown by top seeded solution growth-slow cooling method for several different doping concentrations. Growth parameters have been optimized to obtain macrodefect-free single crystals. Er energy levels involved in the I-4(13/2) -> I-4(15/2) were determined by 6 K polarized optical absorption. The maximum emission cross section for this electronic transition has been evaluated, being 2.85 x 10(-20) cm(2) for E/N-m at 1535 nm. Laser oscillation in the 1.5 mu m range was obtained by pumping the Yb ion at 980 nm and sensitizing Er. The maximum output power achieved was 152 mW, with 1.2% slope efficiency. (c) 2008 Optical Society of America.
机译:top(Er)和Y(Yb)掺杂的单斜晶YLu(WO4)(2)单晶通过几种不同的掺杂浓度的顶部种子溶液生长-缓慢冷却方法生长。优化了生长参数以获得无宏观缺陷的单晶。通过6 K偏振光吸收确定I-4(13/2)-> I-4(15/2)中涉及的Er能级。已评估此电子跃迁的最大发射截面,在1535 nm处E / N-m为2.85 x 10(-20)cm(2)。通过在980 nm处泵浦Yb离子并使Er增感,可得到1.5μm范围内的激光振荡。达到的最大输出功率为152 mW,斜率效率为1.2%。 (c)2008年美国眼镜学会。

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