| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7130556 | Optics & Laser Technology | 2014 | 4 Pages |
Abstract
The large-area monolayer graphene film was grown on Cu foil by chemical vapor deposition (CVD) technique. After transferring it to a quartz substrate, the graphene film was used as a saturable absorber (SA) in an Nd:YVO4 laser. Mode-locked laser pulses of 7.6Â ps were obtained at a central wavelength of 1064Â nm. Under a pump power of 6.7Â W, the average output power reached a high value of 2.5Â W, corresponding to an optical-to-optical efficiency of 37.3% and a slope efficiency of 40.3%. The pulse repetition rate was 87.4Â MHz and the maximum pulse energy was as high as 28.6Â nJ. To date, this might be the highest average output power for mode-locked laser by using graphene SA. Our results illustrate that graphene can potentially be employed in the practical low-cost and high-power mode-locking laser system.
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Authors
S.C. Xu, B.Y. Man, S.Z. Jiang, G.D. Hu, H.L. Dong, J. Liu, C.S. Chen, M. Liu, C. Yang, D.J. Feng, C. Zhang,