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X-ray induced color centres in pure and doped LiYF 4 AND LiLuF 4 single crystals

2002; Taylor & Francis; Volume: 157; Issue: 6-12 Linguagem: Inglês

10.1080/10420150215801

1042-0150

Amina Bensalah‐Ledoux, M. Nikl, A. Vedda, Kiyoshi Shimamura, T. Satonaga, Hiroki Sato, T. Fukuda, G. Boulon,

Pigment Synthesis and Properties

YLiF 4 and LuLiF 4 pure and doped with Yb 3+ ion were grown by the Czochralski technique under CF 4 atmosphere. X-ray irradiation was used to carry out a comparative study of the induced optical absorption phenomena and color center creation in the ultraviolet and visible spectral regions. The F-center absorption band at 315 and 340 v nm in LLF and YLF, respectively, is the dominating induced absorption feature. The amplitude of the induced absorption is reduced by more than a factor of 10 in Yb-doped crystals compared to the undoped ones. Keywords: Color CentresLiyf4Liluf4Induced AbsorptionTsl