Hanna, D.C., Percival, R.M., Smart, R.G., Townsend, J.E. and Tropper, A.C.
Continuous-wave oscillation of a holmium-doped silica fibre laser
Electronics Letters, 25, (9), . (doi:10.1049/el:19890403).
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Laser emission at 2.04µm has been observed in a silica fibre doped with Ho3+. When pumped with an argon laser at 457.9 nm an absorbed threshold power of 46mW and a slope efficiency of 1.7% were measured.
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