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Journal Articles

Spectroscopic properties of Yb doped YLF grown by a vertical Bridgman method

Sugiyama, Akira; Katsurayama, Masamichi*; Anzai, Yutaka*; Tsuboi, Taiju*

Journal of Alloys and Compounds, 408-412, p.780 - 783, 2006/02

https://doi.org/10.1016/j.jallcom.2005.01.094

Times Cited Count：24 Percentile：75.32(Chemistry, Physical)

Laser crystals of LiYF $_{4}$ (YLF) doped with 5 - 64 at.% of trivalent ytterbium ions (Yb $^{3+}$ ) were grown by a vertical Bridgman method. As crystal growth materials of YbF $_{3}$ and YF $_{3}$ including YOF impurities caused opaque crystal, the YOF reduction procedure using PbF $_{2}$ was essential before starting the crystal growth. We derived seven energy levels from the $^{2}$ F $_{7/2}$ and $^{2}$ F $_{5/2}$ manifolds of Yb $^{3+}$ : YLF by the crystal-field analysis from which we explain the observed polarized absorption and emission spectra. The intrinsic broad and complicated spectra of Yb $^{3+}$ : YLF are attributed to the strong coupling of the 4f electrons with lattice vibration of the crystal.