Threefold upconversion laser at 0.85, 1.23, and 1.73 μm in Er:YLF pumped with a 1.53 μm Er glass laser

Pollack, S. A.; Chang, D. B.; Birnbaum, M.
March 1989
Applied Physics Letters;3/6/1989, Vol. 54 Issue 10, p869
Academic Journal
Lasing action at 1.73, 1.23, and 0.85 μm was obtained by a threefold upconversion process in Er:YLF at 110 K using a 1.53 μm Er:glass pump laser. The 1.73 μm transition had the lowest threshold and highest pump conversion efficiency.


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