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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 1 — Jan. 14, 2013
  • pp: 204–209

High-energy passively Q-switched 2 μm Tm3+-doped double-clad fiber laser using graphene-oxide-deposited fiber taper

Chun Liu, Chenchun Ye, Zhengqian Luo, Huihui Cheng, Duanduan Wu, Yonglong Zheng, Zhen Liu, and Biao Qu  »View Author Affiliations

Optics Express, Vol. 21, Issue 1, pp. 204-209 (2013)

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We have demonstrated a high-energy Q-switched double-clad thulium-doped fiber laser (TDFL) using a graphene-oxide-deposited tapered fiber (GODTF) device as a saturable absorber operating at a wavelength of 2 μm for the first time. Because of the side-interaction of the graphene-oxide with the evanescent field on the taper waist, the GODTF devices have potential for offering high laser damage threshold. Using a 788 nm laser diode as the pump source, the TDFL generated stable single transverse mode Q-switched pulses with a single pulse energy of 6.71 μJ (corresponding to an average power of 302 mW) at a wavelength of 2032 nm. This is significantly higher than the highest pulse energy/average power from any rare-earth-doped fiber lasers employing a graphene or graphene-oxide based Q-switch so far. The demonstrated TDFL in this paper represents an encouraging step towards the practical applications of graphene or graphene-oxide based Q-switched 2 μm TDFLs.

© 2013 OSA

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3540) Lasers and laser optics : Lasers, Q-switched
(060.3510) Fiber optics and optical communications : Lasers, fiber

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 1, 2012
Revised Manuscript: December 3, 2012
Manuscript Accepted: December 6, 2012
Published: January 3, 2013

Chun Liu, Chenchun Ye, Zhengqian Luo, Huihui Cheng, Duanduan Wu, Yonglong Zheng, Zhen Liu, and Biao Qu, "High-energy passively Q-switched 2 μm Tm3+-doped double-clad fiber laser using graphene-oxide-deposited fiber taper," Opt. Express 21, 204-209 (2013)

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