  We report an investigation of dispersion management of an all-polarization
maintaining Er-fiber oscillator mode-locked via nonlinear amplification loop
mirror in a figure-nine cavity configuration with two output ports. The
performance of the laser was investigated within the net cavity dispersion
ranging from -0.034 ps2 to +0.006 ps2. We show that the spectral and temporal
phase of the pulses at both figure-nine outputs have clearly different
characteristics. One of the laser outputs provides pulses with significantly
better quality; nonetheless, the rejection output also offers ultrashort pulses
with broad spectra. Pulses as short as 79 fs with an energy of 83 pJ were
generated directly from the laser in the near-zero dispersion regime.
