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High repetition rate passively Q-switched diode-pumped Nd:YVO4 laser
Authors:Jie Liu   Jimin Yang  Jingliang He
Affiliation:Laboratory of Modern Optics, Shandong Normal University, Ji'nan 250014, China
Abstract:We demonstrated an efficient and compact, diode-pumped passively Q-switched Nd:YVO4 laser operation at 1.064 μm wavelength with high repetition rate, using Cr4+:YAG as saturable absorber, formed with a simple flat–flat resonator. The maximum CW output power of 4.05 W was obtained at the incident pump power of 8 W. For Q-switched operation, the maximum average output power was measured to be 1.4 W with the corresponding repetition rate of 200 kHz, the pulse width of 60 ns when the initial transmission of Cr4+:YAG crystal was 85%. The shortest pulse width of 12 ns, the largest pulse energy of 36 μJ and the highest peak power of 3 kW were obtained when the Cr4+:YAG crystal with an initial transmission of 60% was used.
Keywords:Nd:YVO4   Passive Q-switching   Diode pumping   High repetition rate
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