DEVICE FOR LASER PROCESSING AND METHOD OF LASER RADIATION Russian patent published in 2017 - IPC B23K26/352 B23K26/62 C21D1/09 C21D8/12 

FIELD: physics.

SUBSTANCE: laser irradiation unit is adapted to provide the laser beam intensity distribution focused on the sheet being processed, so as to satisfy the relationship Ib/Ia≤2, where Ra₁ and Ra₂ - the distances between the intensity distribution centroid and the positions, at which the intensity integration value, obtained from the intensity distribution centroid, is 43% of the total intensity integration value, Ia₁ and Ia₂ - the intensities of the laser beam corresponding respectively to Ra₁ and Ra₂, wherein Ia is the mean value of Ia₁ and Ia₂, and Ib is the beam intensity at the intensity distribution centroid.

EFFECT: decreasing the magnetic domain size.

15 cl, 13 dwg, 1 tbl