Grubb, S.G., Barnes, W.L., Taylor, E.R. and Payne, D.N.
Diode-pumped 1.36µm Nd-doped fibre laser
Electronics Letters, 26, (2), . (doi:10.1049/el:19900083).
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Laser emission has beem observed at 1.363µm on the 4F(3/2) to 4 I (13/2) transition from a diode-pumped Nd-doped phosphate glass single-mode fibre. Normally, this transition is strongly suppressed in an oxide glass host due to excited state absorption effects which reduce the efficiency of this transition. We observe both the lowest lasing threshold (5 mW) and the highest slope efficiency 10.8%) reported for a fibre laser in the 1.3µm spectral regon.
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