The paper reports the study of synchronous mode-looking of dye laser which hag a hemispherical resonator with a diffraction grating of E = 2M radius of curvature and is pumped by the second-harmonic pulse train from an actively passively mode-locked repetitive pulsed Nd: YAG laser. A broadly tunable, high-power mode-locked dye laser source has been achieved. Beal-time experimental investigation was made of some relationship governing the output characteristics of the dye laser with a BWS-5K high resolution streak camera. Brief analysis and discussion are given concerning the experimental results.