The problem of matching double-chirped mirrors to the ambient medium, which
currently limits the design of ultrabroadband dispersion-compensating mirr
ors is reconsidered. A design of double-chirped mirror pairs that exhibit h
igh reflectivity and a controlled group-delay dispersion in combination ove
r 1 octave is presented. These mirrors permit the generation of octave-span
ning spectra directly from a Ti:sapphire laser oscillator. (C) 2001 Optical
Society of America.