Journal
OPTICS EXPRESS
Volume 22, Issue 3, Pages 3572-3577Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.003572
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Funding
- National Natural Science Foundation of China [U1332121]
- 973 Project of China [2010CB832906]
- National Natural Science Foundation [11305094]
- China Postdoctoral Science Foundation [2013M530316]
- Helmholz-Gemeinschaft Deutscher Forschungszentren [HGF-VH-NG-713]
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We demonstrate the lasing performance in the Nd:YAG ceramic channel waveguide produced by the carbon ion irradiation, including the continuous-wave (cw) and graphene Q-switched configurations. The highest slope efficiency of 56% and the lowest threshold of 40 mW have been obtained for the cw waveguide laser. With graphene as a saturable absorber, the Q-switched laser produces stable pulses with 57 ns pulse duration and 77 nJ pulse energy, respectively. Under the variation of the pumping power, the repetition of the pulse laser could be modified from 1.5 MHz to 4.1 MHz. (C) 2014 Optical Society of America
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