High average and high peak power pulsed fiber lasers at 1030 nm, 515nm and 343 nm

We report on the demonstration of over 140W at 1030 nm with pulse duration down to 10 ns and M(2)<1.3 from a very simple Q-switched architecture based on rod type fiber laser. These very high peak and average power lead to over 53W at 515 nm and 19W at 343 nm. We have also obtained diffraction limited beams with an output power exceeding 240W at 1030 nm and 120W at 515 nm in a very simple MOPA configuration. Due to the very high gain in these fibers, we can keep pulse durations below 20 ns up to 500 kHz in a purely Q-switched system.