1 kHz, 96 W pulse-burst picosecond laser system with six equal spacing and amplitude pulses.

An average power of 96 W pulse-bursts picosecond laser system at a pulse repetition frequency of 1 kHz was reported with six pulses in bursts. Pulses in bursts have equal spacing and amplitude; spacing between each pulse was 800 ps, which repetition rate was up to gigahertz. The beam quality of M2 factor was less than 3, and pulse width was 50 ps. Pulses from a Nd:YVO4 mode-locked laser were broadened to 115 ps by a volume-Bragg grating and each pulse was divided into six pulses by beam splitter mirrors to obtain seed bursts. A Nd:YAG regenerative amplifier and two stages of single passed high gain Nd:YAG amplifier with serrated aperture were applied to achieve high power.