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Directly diode-pumped holmium fiber lasers
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. 17, pp. 2496-2498, Sep 1, 2007.
© 2007 Optical Society of America. Personal use of this material is permitted. However, permission to reprint/republish this material for
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Abstract:
Sensitizer-free holmium-doped silica and fluoride mid-infrared fiber lasers are pumped using a high-power
diode laser operating at 1148 nm. A maximum output power of 162 mW at 2.86 µm was produced at a slope
efficiency of 24% using Ho3+, Pr3+-doped fluoride fiber. Using Ho3+-doped silica fiber, a maximum output
power of 55 mW at 2.1 µm was generated at a slope efficiency of 27%, a value limited by the presence of
pump excited state absorption.
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