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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 24 — Dec. 15, 2010
  • pp: 4136–4138

Watt-level 2 μm laser output in Tm 3 + -doped tungsten tellurite glass double-cladding fiber

Kefeng Li, Guang Zhang, and Lili Hu  »View Author Affiliations

Optics Letters, Vol. 35, Issue 24, pp. 4136-4138 (2010)

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We report, for the first time to the best of our knowledge, a watt level cw fiber laser at 2 μm from a piece of 40-cm-long newly developed highly thulium-doped ( 3.76 × 10 20 ions / cm 3 ) tungsten tellurite glass double cladding fiber pumped by a commercial 800 nm laser diode. The maximum output power of the fiber laser reaches 1.12 W . The slope efficiency and the optical–optical efficiency with respect to the absorbed pump are 20% and 16%, respectively. The lasing threshold is 1.46 W , and the lasing wavelength is centered at 1937 nm .

© 2010 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(160.2290) Materials : Fiber materials
(160.2750) Materials : Glass and other amorphous materials
(160.5690) Materials : Rare-earth-doped materials

ToC Category:

Original Manuscript: September 10, 2010
Revised Manuscript: November 10, 2010
Manuscript Accepted: November 10, 2010
Published: December 9, 2010

Kefeng Li, Guang Zhang, and Lili Hu, "Watt-level ∼2μm laser output in Tm3+-doped tungsten tellurite glass double-cladding fiber," Opt. Lett. 35, 4136-4138 (2010)

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