Excited-state-absorption cross sections and amplifier modeling in the 1300-nm region for Nd-doped glasses

摘要

The performance of Nd/sup 3+/-doped fibre amplifiers is limited by strong excited-state absorption (ESA) of the signal, and, even for fluorozirconate glasses, ESA prevents the important region below 1320 nm from being used. To quantify this limitation and explore alternative host materials, ESA and stimulated-emission cross sections have been measured for a representative group of glass compositions. These parameters have been used in an accurate fiber-amplifier model to provide the first quantitative comparisons of performance for Nd/sup 3+/-doped glasses in the 1300-nm band as a function of host.