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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 14 — Jul. 15, 2014
  • pp: 4259–4262

Flexible picosecond thulium-doped fiber laser using the active mode-locking technique

Ke Yin, Bin Zhang, Weiqiang Yang, He Chen, Shengping Chen, and Jing Hou  »View Author Affiliations

Optics Letters, Vol. 39, Issue 14, pp. 4259-4262 (2014)

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An all-fiber actively mode-locked thulium-doped fiber laser (AML-TDFL) based on a 10 GHz bandwidth electro-optic intensity modulator (EOM) providing flexible picosecond pulses at 1980 nm is presented. The EOM is driven by electrical pulses rather than traditional sine-wave signals. The repetition rate of output pulses was 21.4 MHz at fundamental mode-locking, which could be scaled up to 1.498 GHz through the 70th order harmonic mode-locking, and the shortest measured output pulse width was 38 ps. Furthermore, the output pulse width could be tuned by either adjusting the modulation frequency with small detuning or changing the width of these driving electrical pulses without frequency detuning. In our work, the stability of these mode-locked pulses obtained from the AML-TDFL was superior; for instance, the measured supermode suppression ratio of 1.498 GHz pulses train was up to 48 dB.

© 2014 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.7090) Lasers and laser optics : Ultrafast lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 6, 2014
Revised Manuscript: June 7, 2014
Manuscript Accepted: June 9, 2014
Published: July 15, 2014

Ke Yin, Bin Zhang, Weiqiang Yang, He Chen, Shengping Chen, and Jing Hou, "Flexible picosecond thulium-doped fiber laser using the active mode-locking technique," Opt. Lett. 39, 4259-4262 (2014)

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