Applied Physics B

, 122:105 | Cite as

Passive Q-switching of Yb bulk lasers by a graphene saturable absorber

  • P. A. Loiko
  • J. M. Serres
  • X. Mateos
  • J. Liu
  • H. Zhang
  • A. S. Yasukevich
  • K. V. Yumashev
  • V. Petrov
  • U. Griebner
  • M. Aguiló
  • F. Díaz
Article

Abstract

Compact Yb:KLu(WO4)2 and Yb:LuVO4 lasers diode-pumped at 978 nm are passively Q-switched by a single-layer graphene saturable absorber. The Yb:KLu(WO4)2 laser generated 165 ns/0.49 μJ pulses at 1030 nm with 170 mW average output power and 12 % slope efficiency. With the Yb:LuVO4 laser, 152 ns/0.83 μJ pulses were achieved. The output power reached 300 mW at 1024 nm, and the slope efficiency was 10 %. Laser operation in a plano-plano cavity is achieved with both crystals with thermal lensing playing a key role in their performance. A model describing graphene Q-switched Yb lasers is developed. Our results indicate the potential of graphene for passive Q-switching of ~1 μm bulk lasers.

Keywords

Saturable Absorber Thermal Lens Pulse Repetition Frequency Slope Efficiency Absorb Pump Power 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported by the Spanish Government under projects MAT2013-47395-C4-4-R and TEC2014-55948-R, and by the Generalitat de Catalunya under Project 2014SGR1358. F.D. acknowledges additional support through the ICREA Academia Award 2010ICREA-02 for excellence in research. This work is part of a project that has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 657630.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • P. A. Loiko
    • 1
    • 2
  • J. M. Serres
    • 1
  • X. Mateos
    • 1
    • 3
  • J. Liu
    • 4
  • H. Zhang
    • 5
  • A. S. Yasukevich
    • 2
  • K. V. Yumashev
    • 2
  • V. Petrov
    • 3
  • U. Griebner
    • 3
  • M. Aguiló
    • 1
  • F. Díaz
    • 1
  1. 1.Física i Cristal·lografia de Materials i Nanomaterials (FiCMA-FiCNA)Universitat Rovira i Virgili (URV)TarragonaSpain
  2. 2.Center for Optical Materials and TechnologiesBelarusian National Technical UniversityMinskBelarus
  3. 3.Max Born Institute for Nonlinear Optics and Short Pulse SpectroscopyBerlinGermany
  4. 4.College of PhysicsQingdao UniversityQingdaoChina
  5. 5.State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinanChina

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