140-MHz stretched pulse ytterbium fiber laser operating in the 980–1030 nm spectral range

We report on compact dispersion compensator-free stretched-pulse mode-locked Yb-fiber laser. To avoid the need for dispersion compensators, we built a short-length Yb-fiber laser. The few-cm-long highly-doped Yb-fiber and short segment of single-mode fiber are contained in the cavity providing low value of net normal GVD.