论文标题
超级浓度超薄低成本全dielectric宽带charromatic金属
Hyper Resolute Ultra thin Low Cost All-Dielectric Broadband Achromatic Metalenses
论文作者
论文摘要
金属镜提供了开创性的机会，可以实现高功能低廉，平坦和超薄的光学元素，从而大大降低了成像系统的尺寸和复杂性。如今，金属设计中的主要挑战仍然是实现具有理想情况下将宽波长频谱焦点的成年光学元素实现。在这里，我们提出了一种快速有效的方法，用于设计和制造极其薄的全型金属，通过机器学习代码最佳地解决了可观的问题。用于制造的促成技术是最近开发的超果两光量直接激光写作光刻设备。根据完全平坦的超薄设计，制造的金属浓度显示出有趣的光学特征。总体而言，可观的行为，焦距为1.14 mm，数百微米的焦点深度和仅少量纳米厚度允许在全新的角度考虑新颖和有效的成像系统的设计。
Metalenses offer the ground-breaking opportunity to realize highly performing low-weight, flat and ultrathin, optical elements which substantially reduce size and complexity of imaging systems. Today, a major challenge in metalenses design is still the realization of achromatic optical elements ideally focussing a broad wavelength spectrum at a single focal length. Here we present a fast and effective way to design and fabricate extremely thin all-dielectric metalenses, optimally solving achromaticity issues by means of machine learning codes. The enabling technology for fabrication is a recently developed hyper resolute two-photon direct laser writing lithography equipment. The fabricated metalenses, based on a completely flat and ultrathin design, show intriguing optical features. Overall, achromatic behavior, focal length of 1.14 mm, depth of focus of hundreds of microns and thickness of only few nanometers allow considering the design of novel and efficient imaging systems in a completely new perspective.
