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Optical study of halide modified sulfide glasses containing neodymium ions

1999; Elsevier BV; Volume: 256-257; Linguagem: Inglês

10.1016/s0022-3093(99)00478-0

1873-4812

L. Griscom, Jean‐Luc Adam, Koen Binnemans,

Phase-change materials and chalcogenides

Optical properties of different halide modified germanium gallium sulfide glasses doped with Nd3+ ions are presented. Glasses studied were of the compositions: 50GeS2–25Ga2S3–25CsX, doped with 0.5 at.% Nd3+ where X is Cl, Br or I. Absorption spectra were measured and oscillator strengths calculated. Excited-state emission lifetimes were calculated by the Judd–Ofelt theory and compared with the measured lifetimes. Results were compared with a pure sulfide glass of the composition: Ge25Ga5S70. The halide modified glasses have been found to present a unexpected reversible water sensitivity.