2026-10-14T16:44:55Z https://www.scidb.cn/oai

10.57760/sciencedb.22931 2025-04-10T13:01:41Z

2025-04-10 High-power regenerative amplifier based on dual-crystal Yb:CALGO configuration doi:10.57760/sciencedb.22931 en We demonstrated a high average power dual-crystal Yb:CALGO regenerative amplifier(RA) operated in TEM00 mode. The dual-crystal configuration effectively mitigated thermal effects and enabled a continuous output power of 42.5 W at a pump power of 160 W with the central wavelength of 1054 nm. During regenerative amplification, an amplified output power of 38 W was obtained at repetition rates ranging from 50 to 200 kHz, the central wavelength of 1043 nm while a compressed pulse width of 290.8 fs. Benefiting from effective thermal management and the design of the thermally insensitive cavity, a near-diffraction-limited beam quality was measured to be  =1.11 and =1.11 at the highest output power. Yb:CALGO crystal; regenerative amplifier; high-power xiaoyan liang zhihuat tu jie guo zibiao gan yuguang huang wenhao guo PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset Science Data Bank