Open AccessEnhanced broadband near-infrared luminescence of Bi-doped oxyfluoride glasses
Author(s) -
Beibei Xu,
Dezhi Tan,
Shifeng Zhou,
Zhanglian Hong,
Kaniyarakkal Sharafudeen,
Jianrong Qiu
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.029105
Subject(s) - luminescence , materials science , infrared , doping , silicate , optics , optoelectronics , analytical chemistry (journal) , chemistry , physics , organic chemistry , chromatography
Broadband near-infrared luminescence covering 900 to 1600 nm has been observed in Bi-doped oxyfluoride silicate glasses. The partial substitution of fluoride for oxide in Bi-doped silicate glasses leads to an increase of the intensity and lifetime of the near-infrared luminescence and blue-shift of the near-infrared emission peaks. Both Bi-doped silicate and oxyfluoride silicate glasses show visible luminescence with blue, green, orange and red emission bands when excited by ultra-violet light. Careful investigation on the luminescence properties indicates that the change of near-infrared luminescence is related to optical basicity, phonon energy of the glass matrix and crystal field around Bi active centers. These results offer a valuable way to control the luminescence properties of Bi-doped materials and may find some applications in fiber amplifier and fiber laser.