Cross‐correlation measurements of the cw double mode‐locked dye laser are described for two different cases, showing that the two pulse trains are highly synchronized. A direct display of the pulse shape at the longer wavelength resulted for the first case, in which a short primary pulse was generated along with a much longer incompletely mode‐locked secondary pulse. For the second case, both pulse trains were completely mode‐locked and short. In each case, the jitter between the two pulse trains was less than 1.6 ps and there was zero delay between the two pulses.