Featuring extraordinarily curved propagation trajectories, self-accelerating Airy beams have stimulated considerable interests from academic research to practical applications. However, generation of high-quality Airy beams using compact optical devices is still highly desirable. Here we present a design of integrated Airy phase plates (IAPPs) with a miniature size ( $60\,\,\mu \text{m}\,\,\times 60\,\,\mu \text{m}\,\,\times 1.1\,\,\mu \text{m}$ ). In addition, a phase-type Fresnel zone plate (FZP) is incorporated in the phase element to further reduce the system dimension, endowing the IAPPs the ability of directly generating Airy beams without introducing a bulky Fourier transform (FT) lens. The fabrication of IAPPs is facilitated by femtosecond direct laser writing (FsDLW), and the experimentally generated Airy beams are in good agreement with the numerical simulations. Furthermore, the flexible fabrication of IAPPs with different focal lengths is demonstrated, which results in the generation of Airy beams at different Fourier planes as desired. Our design strategy and fabrication methodology of the microscale three-dimensional (3D) phase plates can unfold new capacities of Airy beams for miniaturization applications in fiber optics and in on-chip photonics.

中文翻译：

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使用集成的通风相位板在设计傅立叶平面上直接生成通风光束

自加速的艾里光束具有异常弯曲的传播轨迹，引起了从学术研究到实际应用的巨大兴趣。然而，仍然非常希望使用紧凑的光学装置产生高质量的艾里光束。在这里，我们提出了一种具有微型尺寸的集成Airy相板（IAPP）的设计（ $ 60 \，\，\ mu \ text {m} \，\，\ times 60 \，\，\ mu \ text {m} \，\，\ times 1.1 \，\，\ mu \ text {m} $ ）。此外，相位型菲涅耳波带片（FZP）被并入相位元件中以进一步减小系统尺寸，从而使IAPPs无需引入笨重的傅立叶变换（FT）透镜即可直接产生艾里光束的能力。飞秒直接激光写入（FsDLW）促进了IAPP的制造，并且实验产生的艾里光束与数值模拟非常吻合。此外，展示了具有不同焦距的IAPP的柔性制造，从而可以根据需要在不同的傅立叶平面上产生艾里光束。我们的微型三维（3D）相板的设计策略和制造方法可以为光纤和芯片上光子学中的微型化应用展现Airy光束的新能力。