标题： 基于二维光子晶体的相干光束整形 显示英文标题

标题： Coherent beam shaping using two-dimensional photonic crystals

摘要： 基于光子晶体的光学器件，例如波导、透镜和光束整形器，在近年来受到了相当多的理论和实验关注。 这些设备的制造由于绝缘体上硅制造技术的广泛可用性而得到了促进。 在这项理论工作中，我们展示了设计一个基于相干光子晶体的光束整形器的可能性。 所使用的光子几何结构是一种高折射率介质核心中的二维方形晶格空气孔。 我们将光束整形问题表述为与生成光束的振幅和相位分布相关的目标函数。 然后，我们使用并行禁忌搜索算法同时最小化这两个目标。 我们的结果显示，集成光子学设计中多个属性的优化完全在当前算法的能力范围内。 显示英文摘要

摘要： Optical devices based on photonic crystals such as waveguides, lenses and beam-shapers, have received considerable theoretical and experimental attention in recent years. The production of these devices has been facilitated by the wide availability of silicon-on-insulator fabrication techniques. In this theoretical work, we show the possibility to design a coherent PhC-based beam-shaper. The basic photonic geometry used is a 2D square lattice of air holes in a high-index dielectric core. We formulate the beam shaping problem in terms of objective functions related to the amplitude and phase profile of the generated beam. We then use a parallel tabu search algorithm to minimize the two objectives simultaneously. Our results show that optimization of several attributes in integrated photonics design is well within reach of current algorithms.