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

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

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.

Language	:	English
Journal	:	Journal of Alloys and Compounds
Volume	:	408-412
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Pages	:	p.780 - 783
Publication Year/Month	:	2006/02
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Paper URL	:	https://doi.org/10.1016/j.jallcom.2005.01.094
DOI for research data	:
Keywords	:	Yb:YLF; Laser Crystal; Crystal Growth; Bridgeman; Spectroscopy; Energy Level; Crystal-field Parameter
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Article of JAEA R&D Review	:
Cooperating Institute	:	三井金属鉱業

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Registration No. : A20040619
JAEA Abstracts No. : 34000297
Paper Submission No. : 412

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