Abstract:
The method of excitation and probing with picosecond light pulses was used to determine the relaxation times of various solvents of dyes № 3955, 3274, 3281, and 3323 used in mode locking of neodymium lasers. The source of exciting and probe pulses was a picosecond neodymium-doped phosphate glass laser operating at a repetition frequency of 2 Hz. The results were analyzed and the experiment was controlled by a microcomputer. A comparison of the results obtained with those deduced from indirect measurements indicated that the latter underestimated seriously (by a factor of 2–10) the relaxation times.