J.G. Manni

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Greater than 50 W average power at a 50 kHz repetition rate has been obtained in a Q-switched, diode-pumped Nd:YVO/sub 4/ master oscillator/power amplifier (MOPA) system operating at 1064 nm and greater than 23 W average power operating at 1342 nm with near-diffraction limited beam quality.
This work describes a cryogenic, electro-optically <i>Q</i>-switched Yb:YAG laser that generates 114-W average TEM<sub>00</sub> power with 47% optical-to-optical efficiency. Pulse repetition frequency is 5 kHz, pulse duration is 16 ns full-width at half-maximum, and <i>M</i> <sup>2</sup> is less than 1.05.
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