AI 中文总结
研究旨在突破传统光学显微镜阿贝衍射极限以获取亚波长信息，通过利用高折射率纳米级结构和高阶贝塞尔光束实现超分辨率成像，展示了（λ/53）的分辨率，阐明了相关因素，凸显该方法在多领域应用的潜力。
AI 中文摘要
在传统光学显微镜中，获取亚波长信息受阿贝衍射极限限制，这在纳米光子学中仍是重大挑战。为克服此限制，我们引入一种方案，利用一系列高折射率纳米级结构，在非衍射贝塞尔光束照明下产生紧密受限的近场焦点。此外，高阶贝塞尔光束的使用可实现超越衍射极限的额外分辨率增强。我们的结果表明，使用金字塔形纳米结构可实现（λ/53）的亚波长分辨率。为阐明控制聚焦行为的因素，我们系统研究了与入射贝塞尔光束相关的不同几何参数对聚焦性能的影响，结果表明这些因素关键决定了焦点的稳定性和空间分布。这些发现突出了所提方法在超分辨率成像和量子技术各种应用中的潜力。
英文摘要
In conventional optical microscopy, accessing subwavelength information is classically constrained by the Abbe diffraction limit which remains a significant challenge in nanophotonics. To overcome this limitation, we introduce a scheme that generates a tightly confined near-field focal spot under non-diffracting Bessel beam illumination, employing a series of high refractive-index nanoscale structures. Furthermore, the utilization of higher-order Bessel beams enables additional resolution enhancement beyond the diffraction limit. Our results demonstrate a subwavelength resolution of (lambda/53) with a pyramidal nanostructure. To elucidate the factors governing the focusing behavior, we systematically investigate the influence of different geometrical parameters related to the incident Bessel beam on the focusing performance and shows that these factors critically determine the stability and spatial profile of the focal spot. These findings highlight the potential of the proposed approach for various applications in super-resolution imaging and quantum technology.
