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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 23 — Dec. 1, 2009
  • pp: 3616–3618

Mode-locked 2 μ m laser with highly thulium-doped silicate fiber

Q. Wang, J. Geng, T. Luo, and S. Jiang  »View Author Affiliations


Optics Letters, Vol. 34, Issue 23, pp. 3616-3618 (2009)
http://dx.doi.org/10.1364/OL.34.003616


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Abstract

We report self-starting passively mode-locked fiber lasers with a saturable absorber mirror using a piece of 30-cm-long newly developed highly thulium (Tm)-doped silicate glass fibers. The mode-locked pulses operate at 1980 nm with duration of 1.5 ps and energy of 0.76 nJ. This newly developed Tm-doped silicate fiber exhibits a slope efficiency of 68.3%, an amplified spontaneous emission spectrum bandwidth (FWHM) of 92 nm, and a gain per unit length of greater than 2 dB/cm. To the best of our knowledge, it is the first demonstration of mode-locked 2 μ m fiber laser using shorter than 1-m-long active fiber, which paves the way for the demonstration of mode-locked fiber laser at 2 μ m with gigahertz fundamental repetition rate.

© 2009 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 7, 2009
Revised Manuscript: September 23, 2009
Manuscript Accepted: October 21, 2009
Published: November 18, 2009

Citation
Q. Wang, J. Geng, T. Luo, and S. Jiang, "Mode-locked 2 μm laser with highly thulium-doped silicate fiber," Opt. Lett. 34, 3616-3618 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-23-3616

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