Pulse full-fiber laser

The invention relates to a pulse full-fiber laser consisting of a master oscillator and a power amplifier, wherein the master oscillator consists of a semiconductor pump source with pigtailed fiber, a(1+1)*1 side coupler, signal light reflection fiber bragger grating double-wrapping-layer Yb-doped fiber, a fiber coupling acoustic optical modulator and an output coupled fiber bragger grating; pumpinput fiber in the (1+1)*1 side coupler is connected with the semiconductor pump source with pigtailed fiber; output fiber is connected with a signal light reflection fiber bragger grating or the output coupled fiber bragger grating; double-wrapping-layer Yb-doped fiber and the fiber coupling acoustic optical modulator are sequentially welded between the signal light reflection fiber bragger grating and the output coupled fiber bragger grating; and the output coupled fiber bragger grating or signal input fiber in the (1+1)*1 side coupler is connected with a signal input end of a power amplifier. The whole system of the pulse full-fiber laser only is simply air cooled, has the advantages of compactness, adjustable repetition frequency, narrow output pulse width, high peak power, and the like, and is stable and reliable and is easy to realize the product forming.