利用全息技术, 采用二元相位处理后的离散型艾里涡旋相位, 制作了一种双复合离散型艾里涡旋加速光.理论模拟和实验探究了该加速光的传输特性, 以及线性因子(s)、径向层数(N)和拓扑荷梯度(ΔL)对光场的调控机制.结果表明, 双加速光在传输过程中, 由于离散和旋转效应, 逐渐分离为多个类艾里光; 通过调节传输距离及ΔL, 可实现二维类艾里光至一维类艾里光之间的演化.此外, N和s可分别调节双加速光的强度分布及其在初始截面(z=0处的x-y平面)中的位置分布; ΔL也可调节分离的类艾里光之间的强度分布.

By utilizing the holographic technique, a novel type of twins composite discrete Airy-vortex accelerating beam is generated with discrete Airy-vortex phase which is processed by binary phase. The propagation properties of the accelerating beam and the modulation of different parameters [the linear factor(s)、the number of total layer (N) and the topological gradient (ΔL)]to the accelerating beam is also studied by theoretical simulation and experiment. The results show that such twins accelerating beam will split itself into several separated Airy-like beams due to the discrete and rotatory effect in propagation; and the separated Airy-like beams evolve into one-dimensional Airy-like beams by adjusting the propagation distance and ΔL. Furthermore, s and N can modulate the intensity distribution of twins accelerating beam and the space distribution of twins accelerating beam in initial plane (the plane x-y at z=0), respectively; ΔL also can modulate the intensity distribution of separated Airy-like beams.