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High-power and highly efficient Tm3+-doped silica fiber lasers pumped with diode lasers operating at 1150 nm
S.D. Jackson1, F. Bugge2, G. Erbert2
1 Optical Fibre Technology Centre, University of Sydney, 206 National Innovation Centre, Australian Technology Park, Eveleigh, 1430 Australia
2 Ferdinand-Braun-Institut für Höchstfrequenztechnik, D-12489 Berlin, Germany
Published in:
Optics Letters, Vol. 32, No. 19, pp. 2873-2875, Oct 1, 2007.
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Abstract:
Tm3+-doped silica fiber laser was pumped with high-power 1150 nm diode lasers. Pump excited state absorption
from the upper laser level populates higher energy levels allowing cross relaxation to repopulate
the upper laser level at a quantum efficiency greater than unity and to limit losses relating to additional
pump excited state absorption. The output power was scaled to 4.77W when both ends of the fiber were
pumped.
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