Synchronously excited picosecond dye laser with an additional ultrathin resonator

A study was made of picosecond operation of a synchronously pumped dye laser composed of two coupled resonators, one matched to the pump laser resonator and the other—ultrathin filled with the active medium. When the optical thickness of the ultrathin resonator was altered, the duration of the output pulses varied within wide limits. It was found experimentally that even short (10-pulse) pump trains were sufficient for generation of laser trains consisting of identical-duration, stable, tunable in a wide range, and spectrally limited pulses of duration down to 5 psec and power of several tens of kilowatts.