A Kerr-lens mode-locked femtosecond Ti:sapphire laser operating at a repetition rate of 2 GHz is demonstrated. A mirror-dispersion-controlled unidirectional ring cavity delivers nearly bandwidth-limited pulses of 23-fs length. Mode locking is self-starting without a hard aperture in the cavity. The advantages of this high-repetition-rate oscillator in optical time-resolved spectroscopy are demonstrated.
© 1999 Optical Society of America
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7150) Ultrafast optics : Ultrafast spectroscopy
(320.7160) Ultrafast optics : Ultrafast technology
A. Bartels, T. Dekorsy, and H. Kurz, "Femtosecond Ti:sapphire ring laser with a 2-GHz repetition rate and its application in time-resolved spectroscopy," Opt. Lett. 24, 996-998 (1999)