Ren Zhijun, Wu Qiong, Shi Yile, Chen Chen, Wu Jiangmiao, Wang Hui
Opt Express. 2014 Jun 16;22(12):15154-64. doi: 10.1364/OE.22.015154.
Based on a geometric caustic argument and diffraction catastrophe theory, we generate a novel form of accelerating beams using a symmetric 3/2 phase-only pattern. Such beams can be called accelerating quad Airy beams (AQABs) because they look very much like four face-to-face combined Airy beams. Optical characteristics of AQABs are subsequently investigated. The research results show that the beams have axial-symmetrical and centrosymmetrical transverse intensity patterns and quasi-diffraction-free propagation features for their four main lobes while undergoing transverse shift along parabolic trajectories. Moreover, we also demonstrate that AQABs possess self-construction ability when local areas are blocked. The unique optical properties of these beams will make them useful tools for future scientific applications.
基于几何焦散论证和衍射突变理论，我们利用对称的仅含相位的3/2图案生成了一种新型加速光束。这种光束可被称为加速四艾里光束（AQABs），因为它们看起来非常像四个面对面组合的艾里光束。随后对AQABs的光学特性进行了研究。研究结果表明，这些光束具有轴对称和中心对称的横向强度分布，并且其四个主要瓣在沿抛物线轨迹横向移动时具有准无衍射传播特性。此外，我们还证明了AQABs在局部区域被遮挡时具有自我重构能力。这些光束独特的光学特性将使其成为未来科学应用的有用工具。
