障碍物后周期性Bottlebeam的自重建

The self-reconstruction of periodic Bottle beam behind obstacle

本文分析了由两束贝塞尔(Bessel)光相干产生的周期性局域空心光束(Bottle beam)遇到障碍物后的自重建特性.由汉克尔波理论分析了自重建的原理,利用衍射积分理论数值模拟了轴上圆形障碍物对光束传输的影响.结果表明,周期性Bottle beam遇到障碍物遮挡时具有自重建特性,重建后的光束依然保持着障碍物前的光强分布特性.研究结果对于利用周期性Bottle beam实现微粒的多层面操控具有特殊意义.

In this paper, the self-reconstructing property of periodic bottle beam generated by the Bessel beam interfering behind obstacle is analyzed. Based on the Hankel wave theory, we analyze the principle of self-reconstruction. According to the diffraction theory, we derive the evolution of beam behind an on-axis circular obstacle. The results show that the periodic bottle beam has the self- reconstructing property and the reconstructed beam maintains the beam intensity distribution. The research results are significant for realizing the multi-plane micro-manipulation by using a periodic bottle beam.