Abstract
A diode-pumped doubly Q-switched and mode-locked (QML) YVO4/Nd:YVO4 laser with an electro-optic (EO) modulator and a GaAs saturable absorber at 1.06 μm is presented. The number of mode-locking pulses underneath the Q-switching envelope decreased with increasing pump power. With output coupling of 6.5%, a single mode-locking pulse underneath the Q-switching envelope was obtained when the pump power exceeded 4.65 W. At a pump power of 8.25 W for output coupling of 10%, a stable mode-locking pulse train at a repetition rate of 1 kHz was achieved with a pulse energy as high as 582 μJ and a pulse duration of about 580 ps, corresponding to a peak power of 1 MW.
Published Version
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