Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect

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ID: 272748
1997
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Abstract
The optimum mode-to-pump ratio in scaling fiber-coupled laser-diode end-pumped lasers to higher power has been investigated by including the thermal effect into the space-dependent rate equation analysis. The optical path difference (OPD) distribution has been derived as a function of the pump-beam quality, focus position of pumping light, and pump radius at the focal plane under the assumption that the end faces of the crystal are thermally insulated. The diffraction losses arising from thermally induced spherical aberration have been estimated by the Strehl intensity ratio. The present results for the optimum mode-to-pump ratio are markedly different from previous analyses in which thermal effects are neglected. Here, the optimum mode-to-pump ratio is a decreasing function of input pump power, and is less than unity in the case of a slightly high pump power. The practical example of a Nd:YAG laser pumped by a 13-W fiber-coupled laser diode is considered to confirm our physical analysis.
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wang1997ieeeoptimization Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Y.F. Chen,T.M. Huang,C.F. Kao,C.L. Wang,S.C. Wang;Y.F. Chen;T.M. Huang;C.F. Kao;C.L. Wang;S.C. Wang;
Journal ieee journal of quantum electronics
Year 1997
DOI
10.1109/3.605566
URL
https://sciprofiles.com/publication/view/a7acf5cd5daa1575b836c6ae7b849c33
Keywords
insulation equations fiber lasers laser modes pump lasers power lasers optical pumping optical diffraction optical losses laser theory

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