Fig. 1. Diagram of cylindrical mirrors for beam shaping along X direction. (a) Rectangular light beam passes through the convex cylindrical mirror with rotation misalignment angle α along Y axis and the concave cylindrical mirror successively to form a square light beam in XYZ direction; (b) shaping beam focusing into the charge coupled device (CCD) by the circular lens in XZ direction

Fig. 2. Numerical results of the far-field focal spot of shaping beam when the convex cylindrical mirror rotates different angles. (a) 0°; (b) 0.06°; (c) 0.09°; (d) 0.12°; (e) 0.15°; (f) 0.18°

Fig. 3. Experimental results of the far-field focal spot of shaping beam when the convex cylindrical mirror rotates different angles. (a) 0°; (b) 0.06°; (c) 0.09°; (d) 0.12°; (e) 0.15°; (f) 0.18°

Fig. 4. Numerical results of the change of tilt angles(threshold) with different normalized phase coefficients when defocus occurs in far field focal spot

Fig. 5. Main lobe energy ratio and the β factor with different rotation angle of the cylindrical mirror for a fixed normalized phase coefficient of 194