Dissipative soliton generation in Yb-fiber laser with an invisible intracavity bandpass filter

摘要

We report on dissipative soliton (DS) generation in an Yb-doped (YDF) fiber laser passively mode locked with thennonlinear polarization rotation (NPR) technique. We found that even without the insertion of a physical bandpassnfilter in the cavity, not only could DSs be automatically formed in the laser but also the formed DSs have a spectralnbandwidth that is far narrower than the Yb-fiber gain bandwidth. Numerical simulations well reproduced the ex-nperimental observations. Our results suggest that a physical intracavity bandpass filter is not a crucial component fornthe generation of DSs in all-normal-dispersion YDF lasers mode locked with the NPR technique. © 2010 OpticalnSociety of America.