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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 25364–25372

Fiber laser pumped high power mid-infrared laser with picosecond pulse bunch output

Kaihua Wei, Tao Chen, Peipei Jiang, Dingzhong Yang, Bo Wu, and Yonghang Shen  »View Author Affiliations

Optics Express, Vol. 21, Issue 21, pp. 25364-25372 (2013)

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We report a novel quasi-synchronously pumped PPMgLN-based high power mid-infrared (MIR) laser with picosecond pulse bunch output. The pump laser is a linearly polarized MOPA structured all fiberized Yb fiber laser with picosecond pulse bunch output. The output from a mode-locked seed fiber laser was directed to pass through a FBG reflector via a circulator to narrow the pulse duration from 800 ps to less than 50 ps and the spectral FWHM from 9 nm to 0.15 nm. The narrowed pulses were further directed to pass through a novel pulse multiplier through which each pulse was made to become a pulse bunch composing of 13 sub-pulses with pulse to pulse time interval of 1.26 ns. The pulses were then amplified via two stage Yb fiber amplifiers to obtain a linearly polarized high average power output up to 85 W, which were then directed to pass through an isolator and to pump a PPMgLN-based optical parametric oscillator via quasi-synchronization pump scheme for ps pulse bunch MIR output. High MIR output with average power up to 4 W was obtained at 3.45 micron showing the feasibility of such pump scheme for ps pulse bunch MIR output.

© 2013 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.4480) Lasers and laser optics : Optical amplifiers
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 12, 2013
Revised Manuscript: September 29, 2013
Manuscript Accepted: October 7, 2013
Published: October 17, 2013

Kaihua Wei, Tao Chen, Peipei Jiang, Dingzhong Yang, Bo Wu, and Yonghang Shen, "Fiber laser pumped high power mid-infrared laser with picosecond pulse bunch output," Opt. Express 21, 25364-25372 (2013)

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