Abstract
Based on the Huygens-Kirchhoff propagation law the intensity distribution of a coherent laser beam, line focused by a cylindrical-lens array and a spherical lens is investigated. With the aim to reduce the depth of the small-scale intensity modulation along the line focus, the effect of alternatingly orthogonal linear polarization and controlled misalignment of the individual line foci and the influence of the divergence of the laser beam is demonstrated. Numerical calculations show a considerable reduction of the small-scale modulation depth of the intensity in the line focus. The physical-optics analysis of the cylindrical-lens array is compared with experimental results.
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