Simulation results of beam transverse intensity patterns of three-Airy autofocusing beam with different initial wing angles: (a) θ = 75°, (b) θ = 90°, (c) θ = 110° at different propagation positions: [(a1)–(a6)] z = 0, 5, 14, 16, 19, 25 mm; [(b1)–(b6)] z = 0, 4, 11, 13, 15, 20 mm; [(c1)–(c6)] z = 0, 3, 8, 10, 12, 16 mm; [(d)–(f)] experimental results corresponding to panels (a)–(c).