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Optics Letters

Optics Letters


  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1104–1106

20 W passively cooled single-mode all-fiber laser at 2.8 μm

Dominic Faucher, Martin Bernier, Guillaume Androz, Nicolas Caron, and Réal Vallée  »View Author Affiliations

Optics Letters, Vol. 36, Issue 7, pp. 1104-1106 (2011)

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A maximum output power of 20.6 W at 2.825 μm from an erbium-doped all-fiber laser is reported, which we believe is the highest output power for this laser transition in single-mode operation. The slope efficiency of the passively cooled laser was up to 35.4% with respect to the absorbed pump power. Accounting for an estimated round-trip intracavity loss of 1.3 dB , we calculated a theoretical conversion efficiency of 39.5%, which is 15% higher than the Stokes efficiency of 34.3%. We believe this is the first experimental confirmation of the predicted pump energy recycling for this fiber laser. The narrow laser linewidth varied from 0.09 to 0.16 nm from low to maximum output power.

© 2011 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(230.1480) Optical devices : Bragg reflectors

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 14, 2011
Revised Manuscript: February 18, 2011
Manuscript Accepted: February 18, 2011
Published: March 21, 2011

Dominic Faucher, Martin Bernier, Guillaume Androz, Nicolas Caron, and Réal Vallée, "20 W passively cooled single-mode all-fiber laser at 2.8 μm," Opt. Lett. 36, 1104-1106 (2011)

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