J. Phys. IV France 04 (1994) C4-411-C4-414
Optical properties of Ni2+ in fluoride investigated by time-resolved spectroscopyM.J. ELEJALDE, R. BALDA and J. FERNÁNDEZ
Departamento de Física Aplicada I, Escuela Técnica Superior de Ingenieros Industriales y de Telecomunicación, Universidad del País Vasco, Alameda Urquijo s/n, 48013 Bilbao, Spain
The optical properties of Ni2+-doped barium-indium-gallium-based (BIGaZYT) and lead-based (PBI) fluoride glasses have been investigated. Absorption and luminescence measurements performed over a wide temperature range indicate that the dopant ion occupies a site of nearly-octahedral symmetry. We observe three luminescence transitions (green, red and NIR) which are assigned to the [MATH] and [MATH] transitions of the Ni2+ ion. Steady-state emission spectra and luminescence decay times as a function of temperature have been measured to determine the presence and extent of nonradiative transitions. In order to correlate glass-matrix composition with emission spectral properties, detailed time resolved measurements have been performed.
© EDP Sciences 1994