METHOD OF TRANSVERSE PUMPING OF THE ACTIVE LASER MEDIUM Russian patent published in 2018 - IPC H01S3/933 

FIELD: physics.

SUBSTANCE: invention relates to laser equipment and can be used for the laser cell active medium optical transverse pumping. Concept of the invention is as follows: in comparison with the known method of the laser active medium transverse pumping, including the radiation transmission from diode pumping sources using the tightly packed on the end portion in a row optical fibers with the fibers all the ends location in one plane, forming the radiating platform, to the forming optics, creating the laser pumping region at the pumping beam and the emission radiation intersection in the laser active medium, new is that the forming optics, consisting of at least one axially symmetric lens, is calculated so, that its equivalent focal length satisfies the equality , where D is the size of the pump region, which coincides with the size of the active medium along the axis of propagation of the laser radiation; θ is total divergence of radiation at the exit from optical fibers, wherein size of the radiating area of the fibers h along the propagation axis of the generation radiation is chosen from the condition , where n is the refractive index of the lens material of the forming optics, and the size of the radiating area of the fibers d in a direction perpendicular to the axis of propagation of the generation radiation is increased by adding rows of fibers, with d≤h, while the radiating area is positioned at a distance from the front main plane of the forming optics with formation, at a distance f_equiv from the rear main plane of the forming optics, of the pump region with a length , where the laser active medium is located.

EFFECT: increase in the output energy characteristics of the laser in the implementation of transverse pumping by creation of the long pumping region with high radiation intensity.

6 cl, 2 dwg