APPARATUS FOR GENERATING LASER RADIATION AND LASER HAVING SAID APPARATUS Russian patent published in 2015 - IPC G02B27/09 

FIELD: physics, optics.

SUBSTANCE: invention relates to laser optics. The apparatus for generating laser radiation (3) comprises homogenisers (1) configured to separately homogenise a plurality of partial beams (6) or a plurality of groups (7) of partial beams (6) of laser radiation (3) such that partial beams (6) or groups (7) thereof from the homogenisers (1) in the working plane (8) form a linear distribution (9, 19) of intensity with fronts (10) which abruptly fall at the ends. Means of closing (2) the partial beams (6) or groups (7) thereof are made and installed such that linear distribution (11, 20) of intensity is formed in the working plane (8), wherein the length of said distribution is greater than the length of each of the linear distributions (11, 20) of intensity of the partial beams (6) or groups (7) thereof. The closing means (2) include a lens array with a plurality of lenses (5). The following condition is satisfied for the lenses (5) of the lens array: 2·F·NA(50%)=M·P₂, where M=1, 2, 3,…, F is the focal distance of each lens, P₂ is the centre to centre distance between the lenses, NA(50%) is the numerical aperture of each of the lenses (5), defined by an angle at which intensity of light passing through the lenses (5) falls by half.

EFFECT: simple design.

18 cl, 9 dwg