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How to increase the peak power of Short pulse fiber laser

How to increase the peak power of Short pulse fiber laser

(Summary description)Higher power, shorter pulse and stronger brightness are the constant pursuit of laser technology development. In the industrial application of Short pulse fiber laser, short pulse and high peak value have an important influence on the material processing effect.

How to increase the peak power of Short pulse fiber laser

(Summary description)Higher power, shorter pulse and stronger brightness are the constant pursuit of laser technology development. In the industrial application of Short pulse fiber laser, short pulse and high peak value have an important influence on the material processing effect.

Information

Higher power, shorter pulse and stronger brightness are the constant pursuit of laser technology development. In the industrial application of Short pulse fiber laser, short pulse and high peak value have an important influence on the material processing effect. Compared with solid-state lasers, fiber lasers have more advantages in average power, but are significantly limited in peak power. For a long time, the pulse width of Short pulse fiber laser was limited to more than ns, the peak value was less than 15kW, and the standard was 100ns 1mJ.

Short pulse fiber laser

Method for increasing the peak power of Short pulse fiber laser

In a laser pulse sequence, the peak power is equal to the pulse energy divided by the pulse width. Therefore, under the same energy conditions, shortening the pulse width can greatly increase the peak power. Under the same pulse width, increasing the peak value can increase the pulse energy.

At present, among the solid-state Short pulse fiber lasers in the mainstream industrial market, the laser energy with nanosecond pulse width can reach mJ level, and the peak power can reach 100kW based on 1mJ energy and 10ns pulse width. The energy of the picosecond pulse laser is about 300μJ, and the peak power can reach 30MW at 10ps. The energy of the femtosecond pulsed laser is calculated as 100μJ and the pulse width is 500fs, and the peak power reaches 200MW. As a comparison, the peak power of the conventional MOPA nanosecond Short pulse fiber laser is around 10kW, which is much lower than that of the solid-state laser.

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