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Modeling of laser-pumped Tm and Ho lasers accounting for upconversion and ground-state depletion

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2 Author(s)
Rustad, G. ; Norwegian Defence Res. Establ., Kjeller, Norway ; Stenersen, K.

Models for numerical simulations of laser-pumped thulium- and thulium-holmium-doped lasers have been developed. In the models, upconversion losses and ground-state depletion in both thulium and holmium are accounted for, as well as spatial dependencies of the pump and resonator modes. The models apply to CW operation and to the build-up of population inversion prior to lasing in pulsed modes of operation. It is shown that upconversion losses in Tm:Ho:YAG significantly reduce the output from the laser in both CW and Q-switched mode. Simulations of CW lasers show good agreement with experimental results

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Quantum Electronics, IEEE Journal of  (Volume:32 ,  Issue: 9 )