Enhanced 1.47 μm Emission And Lowered Upconversion Of Tm~(~(3+))-doped Gallate-germanium-bismuth-lead Glass By Codoping Rare Earths

摘要

An intense broadband 1.47 μm emission with a full width at half maximum of 125 nm and a peak emission cross section of 4.056 × 10~(-21) cm~2 of the Tm~(~(3+))-doped gallate-germanium-bismuth-lead (GGBP) glass has been obtained upon 808 nm diode-laser excitation. Effects of rare-earth (RE~(3+) =Ho~(3+), Tb~(3+), Eu~(3+), Dy~(3+)) codoping on the spectroscopic properties of the Tm~(3+)-doped GGBP glass have been investigated. It is found that the incorporation of RE~(3+) into the Tm~(3+)-doped GGBP glass can effectively improve the 1.47 μm emission and can deduce the upconversion luminescence, which makes the GGBP glass more attractive to use in S-band optical fiber amplifiers.