Highly stable synchronized femtosecond Ti:sapphire laser with 1.3 W powers and sub-femtosecond timing jitter

We realized stable synchronized femtosecond laser by coupling two 1.3 W mode-locking Ti:sapphire lasers with Kerr media, an ultra-long tolerance of length mismatch as 10/spl mu/m and timing jitter of sub-fs were demonstrated.