In the context of the final thesis, the frequency multiplier was researched. It multiplies the pulses repetition rate of the 30 MHz laser by a factor of 32, so that we get a 960 MHz laser. With pulse repetition rates near gigahertz, both higher material ablation efficiency and less damage to the surrounding material can be achieved. The repetition rate was multiplied by the dividing and delaying of pulses in optical fibers.
A repetition rate of 960 MHz was reached, with a standard deviation of the output pulse energy of 3% and the difference between the longest and shortest pulses of 0,45 ps. The multiplier was also tested with an additional amplifier to compensate losses in the multiplier, a 1030 nm optical filter and a 99/1 operating control coupler.
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