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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 12 — Jun. 15, 2011
  • pp: 2293–2295

Kilowatt-peak-power, single-frequency, pulsed fiber laser near 2 μm

Jihong Geng, Qing Wang, Zack Jiang, Tao Luo, Shibin Jiang, and Gregory Czarnecki  »View Author Affiliations


Optics Letters, Vol. 36, Issue 12, pp. 2293-2295 (2011)
http://dx.doi.org/10.1364/OL.36.002293


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Abstract

We generated single-frequency pulses at kilowatt peak power from an all-fiber Tm-doped master oscillator power amplifier system, which is the first report of this kind (to the best of our knowledge) of a laser in the 2 μm region. Compared with the laser linewidth of seed pulses, spectral broadening by a factor of 3 was observed with the amplified pulses. This was attributed to self-phase modulation in passive pigtail fibers of the components (isolator and wavelength division multiplexing) that were placed after the fiber amplifier. The short pulse width ( 7 ns ) of the kilowatt-level pulses prevents an onset of stimulated Brillouin scattering in the long fiber. When launching the pulses into several-meter single-mode fiber, significant nonlinear spectral broadening occurs due to modulation instability in the fiber. This reaction is beneficial for generation of a mid- and long-wavelength IR supercontinuum in nonlinear IR fibers.

© 2011 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3570) Lasers and laser optics : Lasers, single-mode

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 19, 2011
Revised Manuscript: May 18, 2011
Manuscript Accepted: May 19, 2011
Published: June 13, 2011

Citation
Jihong Geng, Qing Wang, Zack Jiang, Tao Luo, Shibin Jiang, and Gregory Czarnecki, "Kilowatt-peak-power, single-frequency, pulsed fiber laser near 2 μm," Opt. Lett. 36, 2293-2295 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-12-2293

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