Generation of 48 fs, 1 GHz Fundamentally Mode-Locked Pulses Directly from an Yb-doped Solid-State Fiber Laser

We demonstrate a fundamentally mode-locked Yb-doped solid-state fiber laser with a repetition rate of 1 GHz and a pulse duration of 48 fs. The nonlinear-polarization-evolution (NPE) mode-locking of the solid-state fiber laser enables up to 286 mW of average power and a 26 nm spectrum bandwidth, which supports a 48 fs pulse duration. The laser self-starts and the central wavelength can be tuned from 1032.4 nm to 1035.6 nm. To the best of our knowledge, it is the shortest pulse duration directly obtained by GHz fundamentally mode-locked Yb-fiber lasers.

Automated summary

We present a fundamentally mode-locked Yb-doped solid-state fiber laser with a repetition rate of 1 GHz and a pulse duration of 48 fs. By employing nonlinear-polarization-evolution (NPE) mode-locking, the laser achieves an average power of up to 286 mW and a spectrum bandwidth of 26 nm, supporting a 48 fs pulse duration. The laser can self-start and the central wavelength is tunable from 1032.4 nm to 1035.6 nm. To the best of our knowledge, this is the shortest pulse duration directly obtained by GHz fundamentally mode-locked Yb-fiber lasers.