Abstract:
Repetitively pulsed operation with a peak output power up to 2 MW and an energy of a train of nanosecond pulses ~ 12 J were achieved in an yttrium aluminate laser with passive polymer Q-switches based on organic dyes. Variation of the initial switch transmittance made it possible to vary the pulse (spike) duration in the range 28 — 90 ns. The maximum pulse repetition rate in a train was 325 kHz when the Q-switching efficiency was 94%.