Application of non-radiative energy transfer from Tb3+ to Nd3+ for pumping a 6 μm solid-state laser

Rare-Earth-Doped Selenide Glasses as Laser Materials for the 5–6 μm Spectral Range

“…They have a specific In all the above cases, the lasing experiments were performed at room temperature, and no specific measures were taken to cool the active glass samples. In contrast, the experiment with the Tb, Nd co-doped glass was performed at liquid nitrogen temperatures [42]. As mentioned in the above section, the Nd 3+ -doped laser glass with Tb 3+ sensitization has to be cooled to liquid nitrogen temperature to avoid a reverse Nd 3+ →Tb 3+ energy transfer.…”