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We report our findings on laser-diode end-pumped Yb:YAG slab output characteristics when using a compact positive confocal unstable–stable hybrid resonator at room temperature. Preliminary experimental results show that for an absorbed pump power of 680 W, a maximum output power of 156 W was produced at 1030 nm with a stability of 0.9%. An optical-to-optical efficiency of 22.9% and slope efficiency...
We reported on a compact, nanosecond multi-pass Nd:YVO4 Innoslab amplifier. A diode-pumped Q-switched Nd:YVO4 laser generating 6 W, 5 ns pulses with the repetition rate of 30 kHz was introduced as the seed. With effective shaping designs for seed laser, mode matching and sufficient coverage of gain volume were achieved. After the seed laser passed gain medium eight times, a high average output power...
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