Premium
Structural and Spectroscopic Characterization of Nominal Yb 3+ :Ca 8 La 2 (PO 4 ) 6 O 2 Oxyapatite Single Crystal Fibers Grown by the Micro‐Pulling‐Down Method
Author(s) -
Boulon G.,
Collombet A.,
Brenier A.,
CohenAdad M.T.,
Yoshikawa A.,
Lebbou K.,
Lee J. H.,
Fukuda T.
Publication year - 2001
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/1616-3028(200108)11:4<263::aid-adfm263>3.0.co;2-m
Subject(s) - materials science , crystallinity , apatite , ion , crystal (programming language) , analytical chemistry (journal) , doping , single crystal , laser , characterization (materials science) , crystallography , optoelectronics , mineralogy , optics , nanotechnology , composite material , chemistry , physics , chromatography , quantum mechanics , computer science , programming language
Yb‐doped Ca 8 La 2 (PO 4 ) 6 O 2 (CLPA) single crystals with the apatite‐type structure and having <0001> orientation were grown by the micro‐pulling‐down (μ‐PD) method. The apatite structure is represented by the monophased field of Ca 8 (La 2– x Yb x )‐(PO 4 ) 6 O 2 (CLYPA) where it is assumed that 2 Ca 2+ sites are substituted by La 3+ and Yb 3+ cations. Its monophased range was found to be from x = 0.0 to 0.2. The segregation of Yb 3+ in CLPA single crystals and the maximum Yb 3+ concentration are discussed. The crystallinity was studied using X‐ray rocking curve analysis. Absorption, emission and fluorescence decay studies of Yb 3+ ions in CLPA were also carried out both at low temperature and room temperature. Spectroscopic data reveal Yb 3+ ion occupation within different crystallographic sites of the apatite‐type structure. The potential for a diode‐pumped Yb 3+ laser is evaluated.