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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 20 — Jul. 10, 2014
  • pp: 4413–4419

1  kW peak power, 110  ns single-frequency thulium doped fiber amplifier at 2050  nm

Erik Lucas, Laurent Lombard, Yves Jaouën, Sylvain Bordais, and Guillaume Canat  »View Author Affiliations

Applied Optics, Vol. 53, Issue 20, pp. 4413-4419 (2014)

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We report a high power, single frequency, linearly polarized master oscillator power amplifier emitting 110 ns, 1 kW peak power pulses at 2050 nm. A 20% slope efficiency and a beam quality of M2=1.21 are achieved with three-stage double-clad Tm3+-doped fiber architecture. Various pump schemes are compared leading to the conclusion that 793 nm pump wavelength is the most efficient for amplification at 2050 nm. Based on numerical simulations, the Brillouin gain coefficient around 2 μm in Tm3+ highly doped silica fiber is estimated to 1.2×1011m/W. Output peak power is limited by stimulated Brillouin scattering to 535 W without mitigation and to 1 kW with application of a strain distribution along the doped fiber.

© 2014 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: February 19, 2014
Revised Manuscript: May 2, 2014
Manuscript Accepted: May 20, 2014
Published: July 3, 2014

Erik Lucas, Laurent Lombard, Yves Jaouën, Sylvain Bordais, and Guillaume Canat, "1  kW peak power, 110  ns single-frequency thulium doped fiber amplifier at 2050  nm," Appl. Opt. 53, 4413-4419 (2014)

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