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By using a GaAs as both an output coupler and a saturable absorber, we present a doubly passively self-Q-switched Cr4+:Nd3+:YAG laser in a short cavity for the first time to our knowledge. This laser can generate more symmetric pulse shape and shorter pulsewidth in comparison with the solely self-Q-switched Cr4+:Nd3+:YAG laser. The output pulse energy and peak powers are higher than those in our previous...
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