@article{5940,
  author = {J. P. R. Wells and A. Sugiyama and T. P. J. Han and H. G. Gallagher},
  title = {Laser site selective excitation of KY3F10-doped with samarium},
  abstract = {Laser selective excitation has identified three Sm2+ centres in KY3F10 Of these, two exhibit strong up-conversion fluorescence due to sequential absorption from the metastable D-5(0) multiplet and high lying 4f(5)5d states. The observation of Sm2+ in KY3F10 appears to provide further evidence for the presence of F- vacancies as proposed by previous workers. The expected Sm3+ C-4v symmetry centre is also observed. A crystal-held analysis of the 46 measured electronic energy levels of this centre, yields parameters consistent with those of other trivalent rare-earth ions in this material. (C) 1999 Elsevier Science B.V. All rights reserved.},
  year = {1999},
  journal = {Journal of Luminescence},
  volume = {85},
  number = {1-3},
  pages = {91-102},
  month = {Dec},
  isbn = {0022-2313},
  doi = {10.1016/s0022-2313(99)00150-7},
  language = {eng},
}