Fig. 1. Cylindrical microlens array beam homogenization system

Fig. 2. Zemax simulation results. (a) Homogenization image using one set of orthogonally placed microlenses with an input laser diameter of 2.5 mm; (b) homogenization image using two sets of orthogonally placed microlenses with an input laser diameter of 2.5 mm; (c) homogenization image using two sets of orthogonally placed microlenses with an input laser diameter of 8 mm; (d)‒(f) horizontal intensity distribution along the center cross-section of the corresponding spots

Fig. 3. Spot formed by Gaussian laser after passing through a cylindrical microlens array homogenizing shaping system. (a) Intensity distribution of the incident two-dimensional Gaussian laser spot; (b) when the diameter of the input laser is 2.5 mm, the laser spot after being homogenized by a set of orthogonally placed microlens arrays has a spot size of 60 mm×60 mm; (c) when the diameter of the input laser is 2.5 mm, the laser spot after being homogenized by two sets of orthogonally placed microlens arrays has a spot size of 45 mm×45 mm; (d) when the diameter of the input laser is 8 mm, the laser spot after being homogenized by two sets of orthogonally placed microlens arrays has a spot size of 65 mm×65 mm; (e)‒(h) horizontal intensity distribution along the center cross-section of the corresponding spots

Fig. 4. When the diameter of the input laser is 8 mm, the square light spot that has been homogenized and shaped by the cylindrical microlens array is displayed on the detector at a distance of 1000 mm from the microlens array. (a) Square spot with a size of 100 mm×100 mm; (b) rectangular spot with a size of 100 mm×130 mm; (c) square spot with a size of 130 mm×130 mm