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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 18 — Sep. 15, 2009
  • pp: 2709–2711

Doubly active Q switching and mode locking of an all-fiber laser

Christian Cuadrado-Laborde, Antonio Díez, Jose L. Cruz, and Miguel V. Andrés  »View Author Affiliations

Optics Letters, Vol. 34, Issue 18, pp. 2709-2711 (2009)

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Simultaneous and independent active Q switching and active mode locking of an erbium-doped fiber laser is demonstrated using all-fiber modulation techniques. A magnetostrictive rod attached to the output fiber Bragg grating modulates the Q factor of the Fabry–Perot cavity, whereas active mode locking is achieved by amplitude modulation with a Bragg-grating-based acousto-optic device. Fully modulated Q-switched mode-locked trains of optical pulses were obtained for a wide range of pump powers and repetition rates. For a Q-switched repetition rate of 500 Hz and a pump power of 100 mW , the laser generates trains of 12–14 mode-locked pulses of about 1 ns each, within an envelope of 550 ns , an overall energy of 0.65 μ J , and a peak power higher than 250 W for the central pulses of the train.

© 2009 Optical Society of America

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 9, 2009
Revised Manuscript: July 27, 2009
Manuscript Accepted: July 31, 2009
Published: September 4, 2009

Christian Cuadrado-Laborde, Antonio Díez, Jose L. Cruz, and Miguel V. Andrés, "Doubly active Q switching and mode locking of an all-fiber laser," Opt. Lett. 34, 2709-2711 (2009)

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