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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 2 — Jan. 18, 2010
  • pp: 1607–1612

High-power linearly-polarized single-frequency thulium-doped fiber master-oscillator power-amplifier

L. Pearson, J. W. Kim, Z. Zhang, M. Ibsen, J. K. Sahu, and W. A. Clarkson  »View Author Affiliations

Optics Express, Vol. 18, Issue 2, pp. 1607-1612 (2010)

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We report a high power narrow-linewidth source at ~2 µm based on a Tm-doped fiber distributed-feedback master-oscillator and three Tm fiber amplifier stages. The master-oscillator and first two amplifier stages were in-band pumped by Er,Yb fiber lasers operating at 1565 nm, and the final stage amplifier was cladding-pumped at 795 nm by two spatially-combined diode-stacks. The MOPA yielded 100 W of single frequency output at 1943 nm with a beam propagation factor (M2) of 1.25 and with a polarization extinction ratio of >94%. The output power was limited by thermally-induced damage in the final amplifier stage. The prospects for further power scaling are considered.

© 2010 OSA

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3570) Lasers and laser optics : Lasers, single-mode

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 20, 2009
Revised Manuscript: December 31, 2009
Manuscript Accepted: January 4, 2010
Published: January 13, 2010

L. Pearson, J. W. Kim, Z. Zhang, M. Ibsen, J. K. Sahu, and W. A. Clarkson, "High-power linearly-polarized single-frequency thulium-doped fiber master-oscillator power-amplifier," Opt. Express 18, 1607-1612 (2010)

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