High-peak power picoseconds laser with flexibly adjustable quantity of output pulses
A high-peak, pulse-number technology, applied in the field of high-peak-power picosecond lasers, can solve problems such as unbearable high pump power, deterioration of laser spot quality, thermal stress effects, etc., to achieve flexible and controllable pulse number, peak High power and good stability
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[0028] According to the above technical scheme, an experimental device with a high peak power picosecond laser whose output pulse number can be flexibly adjusted is constructed. When the pumping optical power is 150w, the pulse repetition rate is 100kHz, the amplifier output power is 4W, and the beam quality factor M is measured with a beam quality analyzer 2 The X and Y direction values are 1.28 and 1.30 respectively. By changing the effective level time of the acousto-optic selector, the number of pulses in a single pulse envelope can be flexibly changed from 1 to several hundred, so as to realize the flexible adjustment of the laser peak power. Observe a single pulse output waveform graph and multiple pulse output waveform graphs. It can be seen from the results that the high peak power picosecond laser with flexibly adjustable output pulse number of the present invention has the advantages of high amplification gain, flexible adjustment of peak power, goo...
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