Abstract

We report on a new design for a passively mode locked fibre laser employing all normal dispersion polarisation maintaining fibres operating at 1 µm. The laser produces linearly polarized, linearly chirped pulses that can be recompressed down to 350fs. Compared to previous laser designs the cavity is mode-locked using a nonlinear amplifying fibre loop mirror that provides an additional degree of freedom allowing easy self-starting and control over the pulse parameters. This is a robust laser design with excellent reliability and lifetime.

© 2012 Optical Society of America