A Compact All-Solid-State 630-ps 9.43-kHz High Power Nd:YAG/Nd:YVO4 Hybrid Laser System

We present a simple and compact design for an all-solid-state laser amplifier system which can output 9.43-kHz 630-ps, 3.5-Wpulse trains under 20 W absorbed pumping power. The excellent matching between the repetition of its seed source and the fluorescence lifetime of the amplifying medium makes it quiet efficient for the four-pass amplifier to be pumped in cw mode without need of any synchronization device between the oscillator and the amplifier. The entire setup just covers an area of 55 × 25 cm2. The output average power fluctuation is less than ±1.5% within 10min and 3% within 6h. (fundamental areas of phenomenology (including applications))