High-power high-repetition-rate single-mode Er-Yb-doped fiber laser system

We demonstrate an all-fiber-integrated, high-power chirpedpulse-amplification system operating at 1550 nm.The seed source is a soliton fiber laser with 156 MHz repetition rate.Two-stage single mode amplifier provides an amplification of more than 40 dB without significant spontaneous amplified emission.The power amplifier is based on claddingpumped 10 µm-core Er-Yb co-doped fiber, the output of which was spliced into standard singlemode fiber.We obtain 10 W average power in a strictly singlemode operation.After dechirping with a grating compressor, near transform-limited, 450 fs-long pulses are obtained.The laser source exhibits excellent short and long-term intensity stability, with relative intensity noise measurements characterizing the short-term stability. ©2012 Optical Society of America