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Optics Letters

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  • Vol. 23, Iss. 23 — Dec. 1, 1998
  • pp: 1837–1839

Dual-wavelength continuous-wave cascade oscillation at 3 and 2 μm with a holmium-doped fluoride-glass fiber laser

Tetsumi Sumiyoshi and Hitoshi Sekita  »View Author Affiliations


Optics Letters, Vol. 23, Issue 23, pp. 1837-1839 (1998)
http://dx.doi.org/10.1364/OL.23.001837


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Abstract

We have demonstrated dual-wavelength continuous-wave oscillation at 3 and 2 μm with a Ho-doped ZrF4– BaF2– LaF3– AlF3– NaF fluoride-glass fiber laser by use of a cascade oscillation scheme. We have shown that the fiber laser operates with a high slope efficiency of 52% (at 3 and 2µm) with respect to the absorbed pump power. With a 6.5-m-long fiber we achieved an output power of 90 mW at each of the wavelengths that was limited only by the pump power, and the 3-µm output power is to our knowledge higher than any previously reported level with 3-μm Ho3+ -doped fiber lasers.

© 1998 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3510) Lasers and laser optics : Lasers, fiber
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers

Citation
Tetsumi Sumiyoshi and Hitoshi Sekita, "Dual-wavelength continuous-wave cascade oscillation at 3 and 2 μm with a holmium-doped fluoride-glass fiber laser," Opt. Lett. 23, 1837-1839 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-23-1837


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