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Spectr oscopic properties of Yb doped YLF grown by a vertical Bridgman method

机译:垂直布里奇曼法生长的掺Yb YLF的光谱性质

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摘要

Laser crystals of LiYF_4 (YLF) doped with 5-64 at. percent of trivalent ytterbium ions (Yb~(3+) were grown by a vertical Bridgman method, M crystal growth materials of YbF_3 and YF_3 including YOF impurities caused opaque crystal, the YOF reduction procedure using PbF_2 wa| essential before starting the crystal growth. We derived seven energy levels from the 2F_(7/2) and ~2F_(5/2 )manifolds of Yb~(3+):YLF by the crystal-fiell analysis from which we explain the observed polarized absorption and emission spectra. The intrinsic broad and complicated spectra ot Yb~(3+):YLF are attributed to the strong coupling of the 4f electrons with lattice vibration of the crystal.
机译:掺有5-64 at。的LiYF_4(YLF)激光晶体。通过垂直Bridgman法生长百分之三的离子(Yb〜(3+),包括YOF杂质的YbF_3和YF_3的M晶体生长材料导致不透明晶体,在开始晶体生长之前必须先使用PbF_2进行YOF还原。通过晶体菲尔分析,我们从Yb〜(3 +):YLF的2F_(7/2)和〜2F_(5/2)流形导出了七个能级,从中解释了观察到的偏振吸收和发射光谱。 Yb〜(3 +):YLF固有的宽谱和复杂谱归因于4f电子与晶体晶格振动的强耦合。

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