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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 1 — Jan. 14, 2013
  • pp: 289–294

All-fiber single-mode actively Q-switched laser at 1120 nm

Jianhua Wang, Shuzhen Cui, Lei Si, Jinbao Chen, and Yan Feng  »View Author Affiliations

Optics Express, Vol. 21, Issue 1, pp. 289-294 (2013)

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An all-fiber single-mode actively Q-switched laser at 1120 nm is demonstrated. The laser cavity consists of a 5 m long Yb-doped polarization maintaining gain fiber, an acousto-optical modulator and a pair of FBGs. At a pump power of 2.5 W, a peak power of 0.8 kW is achieved with a pulse duration of 140 ns at a repetition rate of 1 kHz. A slope efficiency of 16.9% with respect to launched pump power is obtained at 10 kHz. The low achievable gain at 1120 nm, imposed by the parasitic lasing limit at conventional Yb lasing wavelength, has a major role in laser performance.

© 2013 OSA

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 22, 2012
Revised Manuscript: December 19, 2012
Manuscript Accepted: December 19, 2012
Published: January 4, 2013

Jianhua Wang, Shuzhen Cui, Lei Si, Jinbao Chen, and Yan Feng, "All-fiber single-mode actively Q-switched laser at 1120 nm," Opt. Express 21, 289-294 (2013)

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