Generation of synchronized cw trains of picosecond pulses at two independently tunable wavelengths

We report the generation of synchronized trains of picosecond pulses at two independently tunable wavelengths from cw mode-locked dye lasers, synchronously pumped by a mode-locked argon-ion laser (pulse width∼100 psec). This has been achieved both by two-wavelength operation of a single Rhodamine 6G dye laer and by synchronously pumping two independent (Rh-6G) dye lasers. For both cases, with typical pulse widths of ≈ 5 psec at two independently tunable wavelengths, cross-correlation measurements indicate good synchronization, with a jitter of less than ∼10 psec between the two pulse trains.