WIDELY TUNABLE 2-COLOR MODE-LOCKED TI-SAPPHIRE LASER WITH PULSE JITTER OF LESS-THAN-2-FS

An improved laser setup for reliable dual-wavelength cross mode lockin g is reported. We obtain two perfectly synchronized pulse trains that are independently tunable over a wavelength interval as wide as 100 nm and with pulse durations below 30 fs. The pulses are shown to be cros s correlated with interferometric accuracy, thus demonstrating an asto nishing potential of the nonlinear coupling mechanism.