论文标题
弯曲光束的产生及其实验性通过矩形棱镜与非对称多项式背面实现
Curved beam generation and its experimental realization by rectangular prism with asymmetric polynomial back surface
论文作者
论文摘要
随着发现自加速光束的发现，已经实现了在自由空间中获得弯曲光束的可能性。这些特殊的光束为许多新应用以及新型光束类型的探索铺平了道路。最近，已经进行了巨大的研究工作，以实现不同类型的弯曲光束，例如光子钩和通风梁。这些弯曲类型的光束是通过引入结构不对称或将不均匀的介电分布应用于结构的输入和输出面而获得的。在这方面，我们提出了专门设计的不对称结构，该结构具有多项式后表面，该结构会产生弯曲的光束。提出的无损介电结构可以在从15.78 GHz到20.09 GHz不等的频率下产生弯曲梁，并分别为最小41.34和最大57.58度的相应曲率角度。弯曲光束形成的物理背景是基于在上和底部多项式表面上衍射出的退出光波的干扰，这提供了相位调节，从而导致传播光的弯曲轨迹。此外，进一步研究了观察到的梁转向效果，并进行了微波区域的实验验证以验证我们的设计的操作原理。
With the discovery of self-accelerating beams, possibility of obtaining curved light beams in free space has been realized. These special beams paved the way for many new applications as well as the exploration of novel beam types. Recently, great research effort has been conducted to realize different types of curved beams such as photonic hook and airy beam. These curved types of beams are obtained by introducing structural asymmetry or applying non-uniform dielectric distribution to the input and output face of the structure. With this regard, we propose specially designed asymmetric structure with polynomial back surface which generates curved light beams. Proposed lossless dielectric structure can generate curved beams at frequencies varying from 15.78 GHz to 20.09 GHz and corresponding curvature angles of minimum 41.34 and maximum 57.58 degrees, respectively. The physical background of the curved beam formation is based on interference of the exiting light waves that diffract on upper and bottom polynomial surfaces which provides phase modulation leading to the curved trajectory of the propagating light. In addition, the observed beam steering effect is further investigated and the experimental verification in microwave region is conducted to verify our design's operation principle.
