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A compact diode-end-pumped passively Q-switched intra-cavity frequency doubled Nd:YAG/Cr 4+ :YAG composite crystal laser was demonstrated. The pulsed laser at 532 nm was produced and the dependence of the average out power, pulse width and pulse repetition rate on incident pump power were measured. Under the pump power of 14 W, the minimum pulse width of 3.5 ns with repetition rate of 27.5 kHz was obtained, corresponding single-pulse energy of 18 μJ and peak power of 5.3 kW.
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Yang et al. (2009) studied this question.
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