Mid-IR luminescence of Dy3+ and Pr3+ doped Ga5Ge20Sb10S(Se)(65) bulk glasses and fibers

作者：Charpentier F; Starecki F; Doualan J L; Jovari P; Camy P; Troles J; Belin S; Bureau B; Nazabal V^*

来源：Materials Letters, 2013, 101: 21-24.

DOI：10.1016/j.matlet.2013.03.062

• Chalcogenide glass
• Fiber
• EXAFS
• Mid-IR emission
• Praseodymium
• Dysprosium

Dy3+ and Pr3+ doped Ga5Ge20Sb10S(Se)(65) glasses provide good emission efficiencies in the mid-infrared (mid-IR). The complex glassy network of these chalcogenide glasses were characterized by Raman scattering and extended X-ray absorption fine structure, to put in evidence a structure combining tetrahedra of Germanium and Gallium and trigonal pyramids of Antimony. The arrangement of these structural units permits the introduction of rare earth ions thanks, in particular, to a charge compensation generated by the Ga in a tetrahedral site. Consequently, Pr3+ and Dy3+ ions inserted in such low phonon energy glasses emit efficiently in mid-IR, between 3.5 and 5 mu m. Finally, Dy3+ and Pr3+ doped Ga5Ge20Sb10S(Se)(65) fibers were obtained from bulk glass preform. Efficient emission in mid-IR was obtained by pumping Dy3+ doped Ga5Ge20Sb10S65 and Pr3+ doped Ga5Ge20Sb10S(Se)(65) fibers at 920 nm and 2 mu m, respectively.

• 出版日期2013-6-15
• 单位中国地震局