Frequency upconversion analysis for Tb3+-Yb3+ co-doped system in glass materials

Spectroscopic analyses have been performed on Tb3+ and Yb3+ co-doped in borosilicate glass, to assess their potential as green laser and amplifier gain media. The energy transfer efficiencies between Tb3+ and Yb3+ are clarified based on experimental observations and numerical analyses on the emission decay dynamics.