Optical EngineeringInvestigation on the Q-switching performance in an intracavity-frequency-doubled YVO4 / Nd : YVO4 / KTP green laser with a monolayer graphene
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A diode-pumped, passively Q-switched, intracavity-frequency-doubled YVO4/Nd:YVO4/KTP green laser has been realized with a monolayer graphene as the saturable absorber. Under an incident pump power of 10.5 W, the maximum output power of the passively Q-switched green laser was 516 mW with a repetition rate of 222 kHz and pulse width of 202 ns. The corresponding pulse energy and the peak power were 2.32 μJ and 11.5 W, respectively.