2026-10-13T03:14:10Z https://www.scidb.cn/oai

10.57760/sciencedb.41012 2026-06-25T11:05:22Z

2026-06-25 Tm-fiber laser pumped Ho:YAG MOPA system delivering 534 W average output power at a pulse repetition frequency of 10 kHz doi:10.57760/sciencedb.41012 en  A pulsed high-power Ho:YAG master-oscillator power amplifier (MOPA) system single-end-pumped by Tm-doped fiber lasers was demonstrated. Through a four-stage amplifier configuration, the maximum average output power of Ho:YAG MOPA system reached 534 W at a pulse repetition frequency of 10 kHz and a pulse width of 52.5 ns, corresponding to the pulse energy of 53.5 mJ and a peak power of 1.017 MW. To the best of our knowledge, this is the maximum average output power for the 2 μm pulsed laser system. Additionally, a polarization-purified laser was obtained by inserting a thin-film polarizer in each amplifier to filter out the depolarized laser. The maximum average output power of the polarization-purified laser was 432 W, and the beam quality M² factors were measured to be 1.93 and 1.51 in the x and y directions,respectively. Ho:YAG laser; solid state laser; pulsed laser; MOPA system; polarization purified 康攀强 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank