Abstract
An all solid state master-oscillator-power-amplifier laser system was experimentally investigated using a pulsed-diode-pumped single-longitudinal-mode Nd:YAG laser as a master oscillator. The system was operated with 400 Hz pulse repetition rate. The amplifiers contain a pre-amplifier and a power amplifier. A specially designed large aperture tapered fiber as a solid state phase conjugation mirror was used in the power amplifier to improve the beam quality. The maximum pulse energy of 101 mJ is obtained after double-pass amplification. The pulse duration is less than 6 ns. The corresponding peak power reached 16.8 MW for each single pulse.
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