Nd: YAG laser with plasma mirror

Nd: YAG laser action controlled by a solid target-plasma reflectivity is reported. A quasi-continuous mode-locking pulse train consisting of 26 ± 4 ps pulses was observed using a two-stage laser amplifier and a carbon target. A single pulse energy of 0.2 mJ and a peak power density at the target of about 10 11 W/cm 2 were measured.