Optimizing mode-to-pump ratio in end-pumped Nd:GdVO4 laser at 1342 nm considering the energy-transfer-upconversion
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- Wang, Y., Li, W., Pan, L. et al. Laser Phys. (2012) 22: 1655. doi:10.1134/S1054660X12110138
The losses arising from energy-transfer-upconversion effects are derived as a function of mode-to-pump ratio in end-pumped Nd-doped lasers. The optimum mode-to-pump ratio with and without the energy-transfer-upconversion taking the thermally induced diffraction losses into account is investigated. The results show that the optimum mode-to-pump ratio with the upconversion effects is less than that in which the energy-transfer-upconversion effects are neglected. The theoretical model is applied to a diode-end-pumped Nd:GdVO4 laser operating at 1342 nm. The theoretical calculations are in good agreement with the experimental results.