Fig. 1. Tilted lens rotates around the x-axis with an angle of θ

Fig. 2. Experimental setup for converting the LG beams array into the HG beams array by a tilted lens

Fig. 3. Phase patterns loaded into SLM for generating the LG beams arrays. (a) 1×1; (b) 2×2; (c) 3×3; (d) 3×1; (e) 1×3

Fig. 4. Experimental results of LG beam arrays at the focal plane of lens L₂. (a) 1×1; (b) 2×2; (c) 3×3; (d) 3×1; (e) 1×3

Fig. 5. Experimental results of HG beams arrays after tilted lens L₃, the tilted lens is rotated about the x-axis. (a) 1×1; (b) 2×2; (c) 3×3; (d) 3×1; (e) 1×3

Fig. 6. Experimental results of HG beams array after tilted lens L₃, the tilted lens is rotated about the y-axis. (a) 1×1; (b) 2×2; (c) 3×3; (d) 3×1; (e) 1×3