Abstract

We present a detailed study of a combined actively and passivelyQ-switched (CAPQ) laser with an acousto-optic modulator (AOM) and acodoped Cr4+, Nd3+:YAG crystal. The hybrid Q-switchapproach is used to produce a short laser pulse with stable and tunablerepetition rates. The timing jitter, average pulse width, and averagepulse amplitude vary periodically with the AOM modulation frequencyunder a fixed pump power. The repetition rate of the CAPQ laser can beturned approximately from 4 kHz to 16 kHz with the jitter less than400 ns.

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