Spectroscopic studies using laser induced fluorescence and numerical modelling of energy transfer and back transfer mechanism are reported in Er:Tm:Ho:YLF, Cr:Tm:Ho:YAG and Cr:Tm:YAG laser crystals at various temperatures (10 K-300 K). Direct energy transfer from Tm3+ excited states to Ho3+ 5I7 emitting level was observed and analyzed both in YAG and YLF. Further analysis of Cr3+ and Tm3+ time dependent emission curves indicate strong correlation of chromium-thulium pairs. Pulsed operation of holmium laser at high temperature will be presented.
|Number of pages||5|
|Journal||Journal De Physique|
|State||Published - Apr 1994|
|Event||Proceedings of the 3rd International Laser M2P Conference - Lyon, Fr|
Duration: 8 Dec 1993 → 10 Dec 1993