Abstract
Continuous-wave laser emission at 3.41 μm from an erbium-doped LiYF4 crystal (Er:YLF) at 77 K is reported. Operation of this 4 - level laser is based on the Er3+ 4F9/2 - 4I9/2 transition. An output power of 12 mW and a slope efficiency of 2% have been achieved.
© 1994 Optical Society of America
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