Subpicosecond pulse generation and amplification in a passively mode-locked cw dye laser

An investigation was made of the parameters of a passively mode-locked cw dye laser utilizing a jet of a rhodamine 6G and DODCI solution in ethylene glycol. A continuous train of pulses of 0.4 psec duration was obtained. The tuning range under mode-locking conditions was 590–610 nm. The subpicosecond pulses were amplified by a factor of 100 using an amplifer comprising a rhodamine 6G solution in ethanol pumped by N₂ laser radiation.