High-energy femtosecond Yb-doped all-fiber monolithic chirped-pulse amplifier at repetition rate of 1 MHz

Lv Zhi-Guo¹, Teng Hao^{2, †,}, Wang Li-Na², Wang Jun-Li¹, Wei Zhi-Yi^{1, 2, ‡,}

The M² measurement of the all-fiber amplifier at 10.5-μJ amplified uncompressed energy. Inset shows the near field and far field beam profile.