toward a novel antireflection-coated thin saturable absorber. With a Ti: sapphire laser we
obtained self-starting Kerr-lens mode-locked pulses as short as 19 fs. With the higher
modulation depth of the thin saturable absorber we obtained soliton mode-locked self-
starting 34-fs pulses over the full cavity stability regime with a significantly shorter mode-
locking buildup time. The pulse duration was limited only by the semiconductor Bragg mirror.