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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 8 — Apr. 15, 2009
  • pp: 1204–1206

Low-phase-noise, single-frequency, single-mode 608 W thulium fiber amplifier

Gregory D. Goodno, Lewis D. Book, and Joshua E. Rothenberg  »View Author Affiliations

Optics Letters, Vol. 34, Issue 8, pp. 1204-1206 (2009)

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A chain of four Tm-doped fibers amplified a single-frequency, 2040 nm diode laser to 608 W with M 2 = 1.05 ± 0.03 , limited by available pump power. Stimulated Brillouin scattering limits were investigated by splicing different lengths of passive fiber to the output of the final amplifier stage. Integrated rms phase noise above 1 kHz was less than λ 30 , suggesting the possibility of further scaling via coherent beam combining. To our knowledge, this is the highest power obtained from any single-frequency, single-mode fiber laser.

© 2009 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
(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: January 9, 2009
Revised Manuscript: February 25, 2009
Manuscript Accepted: March 2, 2009
Published: April 8, 2009

Gregory D. Goodno, Lewis D. Book, and Joshua E. Rothenberg, "Low-phase-noise, single-frequency, single-mode 608 W thulium fiber amplifier," Opt. Lett. 34, 1204-1206 (2009)

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