Abstract

We report on an all-normal-dispersion mode-locked fiber laser based on a large-mode-area Yb-doped microstructure fiber and using a high nonlinear modulation depth semiconductor saturable absorber mirror. The laser delivers 3.3W of average output power with positively chirped 5.5ps pulses at a center wavelength of 1033nm. The pulse repetition rate is 46.4MHz, which results in an energy per pulse of 71nJ. These pulses are extracavity dechirped down to 516fs by using bulk gratings. The average power of the dechirped pulses is 2.3W, which corresponds to a peak power of more than 96kW.

© 2007 Optical Society of America

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