Ecitation energy transfer between Pr~3＋ and Nd~3＋rare-earth ions in silicate glass

摘要

Nonradiative excitation transfer (NET) was observed between trivalent Pr~3 ＋and Nd~3＋ions in silicate glass. Cooperative sensitisation of the luminescence of Nd~3＋ ions by Pr~3＋ ions in the ~4F_3/2→~4I13/2 transition was observed as a result of NET. The luminescence was excited by the cw radiation of an Nd~3＋:YAG laser with a power of ～800 W (λ=1.064 μm) operating on the basis of the ~3H_4→~1G_4 transition at the wavelength corresponding to the Pr~3＋ absorption band. The NET mechanism, responsible for the luminescence of the Nd~3＋ion at the wavelength corresponding to the band with a maximum at λ=1.34μm, is discussed.