Optimizing Mode-to-Pump Ratio in End-Pumped Nd:GdVO4
Laser at 1342 nm Considering the Energy-Transfer-
Upconversion
1

Y. Wang*, W. Li, L. Pan, J. Yu, and R. Zhang

Department of Physics, School of Science, Xi’an Technological University, Xi’an 710021, China

*e-mail: wang15291699636@163.com

Received May 16, 2012; published online October 1, 2012

Abstract—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 experimen-
tal results.

DOI: 10.1134/S1054660X12110138


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