PRISMLESS PASSIVELY MODE-LOCKED FEMTOSECOND CR-LISGAF LASER

A Kerr-lens mode-locked Cr:LiSrGaF laser containing no intracavity pri sms has been demonstrated for the first time to the authors' knowledge . The laser produced stable near-transform-limited 44-fs pulses with a n output power of 200 mW, tunable between 833 and 857 nm. Low-loss Gir es-Tournois structured dielectric mirrors were used for dispersion con trol. The measured group-delay dispersion of the active medium as well as of the mirrors permitted to minimize the number of reflections, pe rmitting higher output power. (C) 1996 Optical Society of America