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Passive Q-switching laser performance of Yb:Gd3Ga5O12 garnet crystal
Wenjuan Han1, Hongying Yi, Qibiao Dai
1College of Physics, Qingdao University, Qingdao, China.
Applied Optics
|July 12, 2013
Abstract:
We report on the passive Q-switching laser performance of the Yb:Gd3Ga5O12 garnet crystal. With a Cr4+:YAG crystal used as saturable absorber for passive Q-switching, an average output power of 5.31 W was produced at a pulse repetition rate of 62.5 kHz, the optical-to-optical and slope efficiencies being, respectively, 45% and 61%. Laser pulses of 140 μJ in energy and 5.8 ns in duration were also obtained at 22.2 kHz, with a corresponding peak power amounting to 24.1 kW.
