We report the characterization of the pump absorption and emission dynamic properties of a Tm: Lu2O3 ceramic lasing medium using a three-mirror folded laser cavity. We measured a slope efficiency of 73%, which allowed us to retrieve the cross-relaxation coefficient. The behavior of our system was modeled via a set of macroscopic rate equations in both the quasi continuous wave and the pulsed pumping regime. Numerical solutions were obtained, showing a good agreement with the experimental findings. The numerical solution also yielded a cross-relaxation coefficient in very good agreement with the measured one, showing that the cross-relaxation phenomenon approaches the maximum theoretical efficiency.
Cross-relaxation and temporal dynamics of lasing at 2 μm in thulium-doped ceramic material
Fregosi A.
Membro del Collaboration Group
;Brandi F.Membro del Collaboration Group
;Labate L.Membro del Collaboration Group
;Baffigi F.Membro del Collaboration Group
;Cellamare G.Membro del Collaboration Group
;Palla D.Membro del Collaboration Group
;Toci G.Membro del Collaboration Group
;Whitehead A.Membro del Collaboration Group
;Gizzi L. A.Membro del Collaboration Group
2025
Abstract
We report the characterization of the pump absorption and emission dynamic properties of a Tm: Lu2O3 ceramic lasing medium using a three-mirror folded laser cavity. We measured a slope efficiency of 73%, which allowed us to retrieve the cross-relaxation coefficient. The behavior of our system was modeled via a set of macroscopic rate equations in both the quasi continuous wave and the pulsed pumping regime. Numerical solutions were obtained, showing a good agreement with the experimental findings. The numerical solution also yielded a cross-relaxation coefficient in very good agreement with the measured one, showing that the cross-relaxation phenomenon approaches the maximum theoretical efficiency.| File | Dimensione | Formato | |
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Descrizione: Cross-relaxation and temporal dynamics of lasing at 2 μm in thulium-doped ceramic material
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