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Abstract
Synthesis of high quality graphene films on Cu foil by atmospheric pressure chemical vapor deposition (APCVD) was studied systematically. Acetylene and Cu foil were chosen as the carbon source and the catalyst (or the support) for the synthesis of graphene, respectively. The effect of several synthesized parameters on the structure of graphene films were investigated in detail. The controlled synthesis of graphene and the optimal synthesis conditions were derived. The prepared graphene film was transferred to a coated mirror as a Q-switching saturable absorber used in a Nd:YAG laser. The obtained shortest laser pulse width with single-pulse energy of 8.18 μJ was 242.8 ns. The results indicate that graphene film synthesized by APCVD can be excellently used as saturable absorber material in ultrashort pulse laser.
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