Self-healing of the multi-sector beam array

We discussed the self-healing characteristic of the generated multi-sector beam array with the modulated metalens phase theoretically and experimentally. The effect of the obstacle size and position on the self-healing of the beam array is also analyzed by introducing the matrix correlation degree parameter K. The results verify the self-healing property of the obstructed multi-sector beam array and demonstrate that the effective self-healing distance will increase as the obstacle size increases. The experimental results agree with the theoretical ones well. The multi-sector beam array with the self-healing characteristic can be potentially applied in threedimensional optical trapping and information transmission.