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Optics Express

Optics Express

  • Vol. 16, Iss. 16 — Aug. 4, 2008
  • pp: 11858–11870

Two-wavelength passively Q-switched ytterbium doped fiber laser

Lei Pan, Ilya Utkin, and Robert Fedosejevs  »View Author Affiliations

Optics Express, Vol. 16, Issue 16, pp. 11858-11870 (2008)

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A high power passively Q-switched dual wavelength Yb fiber laser using a Cr4+:YAG saturable absorber has been realized. Two wavelengths centered at 1040 nm and 1070 nm are generated directly from the cladding pumped Yb doped fiber laser. The pulse trains exhibit regions of stability and instability dependent on the pump power. At a pump power of 7.8 W, 1040 nm and 1070 nm pulses are generated alternatively, with pulse durations of 105 ns, pulse-repetition rates of 32 KHz and average pulse energies of 56 μJ and 47 μJ, respectively. A theoretical model is developed to simulate the two-wavelength Q-switched operation, which gives qualitative agreement with the experimental observations.

© 2008 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 19, 2008
Revised Manuscript: July 10, 2008
Manuscript Accepted: July 10, 2008
Published: July 24, 2008

Lei Pan, Ilya Utkin, and Robert Fedosejevs, "Two-wavelength passively Q-switched ytterbium doped fiber laser," Opt. Express 16, 11858-11870 (2008)

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