Propagation properties of ring Airy beams array in a nonlinear media

Highlights: • Theoretically prove the feasibility of laser bullets controllable by RABs' source. • Prove that the intensity of the laser bullets power-law increases with the incident RABs' intensity. • Discuss the advantages of laser tweezers with a three-point structure. The control of lasers is one of the most important subjects in optics. In this paper, we investigate the propagation behavior of three ring Airy beams (RABs) with an equilateral triangle arrangement. The visualized intensity distribution of RABs array exhibits two types of autofocus: 1. sudden autofocus, which can be applied in producing laser bullets; 2. triangle autofocus, which can be used as laser-tweezers. The properties of laser bullets are investigated. The results reveal that the center intensity (position) of laser bullets increases (decreases) in a power-law way versus initial RABs' intensity. Moreover, we discuss the range of parameters to produce laser-tweezers with the best quality. Since the position and power of the RABs-bullet and RABs-tweezers can be controlled with high precision, it has important application value in many fields such as laser targeted therapy of cancers, manipulation of microscopic objects, photoresist technology in chips and so on.