Paschotta, R., Moore, N., Clarkson, W.A., Tropper, A.C., Hanna, D.C. and Maze, G.
230 mW of blue light from a thulium-doped upconversion fiber laser
IEEE Journal of Selected Topics in Quantum Electronics, 3, (4), . (doi:10.1109/2944.649548).
We demonstrate a powerful diode-pumped blue laser source, consisting of a 7W diode at 807nm that pumps a Nd:YAG laser giving 1.6W with good beam quality at 1123nm, and a thulium-doped upconversion fiber laser. The maximum output power achieved at 481nm is 230mW. We also describe the behavior of a reversible loss which is generated in the fluoride fiber during high power operation
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