For the first time to our knowledge, we demonstrate a collinear frequency-resolved optical gating (FROG) technique that is suitable for the characterization of sub-10-fs pulses. This FROG variant does not suffer from geometrical blurring effects, and a temporal resolution of 1 fs can be achieved without the need for additional aperturing. The apparatus is suitable for subnanojoule pulse energies. We apply this technique for the full characterization of pulses from a Kerr-lens mode-locked Ti:sapphire laser.
© 2000 Optical Society of America
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(320.0320) Ultrafast optics : Ultrafast optics
(320.5550) Ultrafast optics : Pulses
(320.7100) Ultrafast optics : Ultrafast measurements
L. Gallmann, G. Steinmeyer, D. H. Sutter, N. Matuschek, and U. Keller, "Collinear type II second-harmonic-generation frequency-resolved optical gating for the characterization of sub-10-fs optical pulses," Opt. Lett. 25, 269-271 (2000)