Abstract
So far, ultrashort pulse generation using mono-lithically grown semiconductor saturable absorber mirrors (SESAMs) have suffered from the bandwidth limitation of the AlGaAs/AlAs Bragg mirror.1 The replacement of tile bottom reflector by a silver mirror allows for the generation of sub-6-fs pulses directly from a Ti:sapphire laser, 2 but requires post-growth processing since the semiconductor saturable absorber cannot be single-crystalline grown on top of a silver mirror.
© 2001 Optical Society of America
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