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物理学报  2013 

Generation of autofocusing beams with multi-Airy beams
多艾里光束合成自聚焦光束的实验实现

Keywords: Airy beam,auto-focusing beam,laser combination,spatial light modulation
艾里光束
,自聚焦光束,激光合成,空间光调制

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Abstract:

Thus far, focusing a single beam and combining multi-optical Gaussian beams have become two major methods of locally enhancing output laser intensity. In this paper, we propose a method of generating free space auto-focusing beams by combining multiple one-dimensional Airy beams. By employing split-step beam propagation method, auto-focusing beams generated by four and eight one-dimensional Airy beams are numerically simulated, and their intensity distributions are displayed from both transverse plane and side-view propagation. By utilizing a spatial light modulator and computer generated phase masks, these auto-focusing beams are experimentally demonstrated. Our experimental results accord well with the numerical simulations.

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