We report a laser that emits two Q-switched pulses, one at 1.047μm and the other at 1.064μm, generated by a Nd:YLF and a Nd:YVO4, respectively. The crystals are pumped by two fiber-coupled diode lasers (808nm and 880nm); the delay between the pulses can be controlled by adjusting the power of the pumps. Two kinds of Q-switching techniques are reported, passive (Cr:YAG saturable absorber) and active (electro-optic modulator). We model both the active and passive Q switching and make a comparison between numerical simulations and experiments. We show experimentally and theoretically that in both cases the pulses can be synchronized; however, the stability of the synchronization (sensitivity to pump power fluctuations) is better for active than for passive Q switching. We also report that under certain experimental conditions a third wavelength is obtained, 1156nm, which corresponds to the first Stokes shift of the 1047nm pulse produced by stimulated Raman scattering from the Nd:YVO4 crystal.