A narrow-pulse-width multi-
wavelength laser based on LED pumping comprises a reflecting mirror, a first LED pumping module, an
optical rotation crystal, a second LED pumping module, an acousto-optic Q-switched
crystal and an output mirror which are sequentially connected in series. The LED pumping module comprises a
laser rod located in the center, a glass sleeve is arranged on the periphery of the
laser rod in the length direction, a supporting frame is arranged on the periphery of the glass sleeve, a plurality of sets of water-cooling
copper blocks are evenly arranged on the supporting frame, and an LED stacking array is arranged on the side, close to the glass sleeve, of each set of water-cooling
copper blocks. Each LED stacking array comprises an LED light bar and a PCB (
Printed Circuit Board) for fixing the LED light bar, and the PCB is connected with the water-cooling
copper block; cooling
water circulation modules are arranged at the two ends of the laser rod in the length direction respectively, and water through holes are formed in the cooling
water circulation modules and the
water cooling copper blocks respectively. A laser
resonant cavity system of the laser takes an LED as a pumping source, combines an acousto-optic Q-switching technology, and simultaneously realizes compression of
laser pulse width and multi-
wavelength output.