chiralFEBID - Direct writing of chiral and nonlinear plasmonic devices

chiralFEBID - 直接写入手性和非线性等离子体装置

• 批准号: 428223558
• 负责人: Dr. Katja Höflich
• 金额: --
• 依托单位: Ferdinand-Braun-Institut gGmbH, Leibniz-Institut für Höchstfrequenztechnik (FBH)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/428223558?language=en
• 关键词: chiralFEBID; Direct; writing; chiral; nonlinear; chiralFEBID; Direct; writing; chiral; nonlinear

Progress in miniaturisation constitutes an enormous impetus for technical innovations in information technology, permeating all economic sectors. Future IT systems will rely on photons instead of electrons what triggers the need for nanoscale optical devices. Plasmonic nanostructures constitute a promising approach since their minimum geometric features are not restricted by the diffraction limit. This project will focus on designing, fabricating and testing of threedimensional nano-devices based on plasmonic nanostructures. The proposed devices are a chiral circular polarization converter and a chiral all-optical converter downscaling telecom light to visible light on chip by second and third harmonic generation. Polarisation sensitive waveguides will serve for in- and out-coupling from near to far-field. The envisaged footprint of the device prototypes will be smaller than 1 μm^2 constituting a crucial step towards device miniaturisation. The device fabrication requires the combination of full geometric shape control with desired material properties. In this regard direct writing with electrons is the optimum choice. While the focused electrons account for minimum structural features, the direct writing provides access to three dimensions in a single step. In combination with ionbeam based pattering complex devices can be fabricated within one vacuum chamber. Since plasmonic systems require a metallic optical response with preferably low losses, deposited and patterned materials will be optimized concerning their optical response in the visible range. Materials and devices will be characterized with various spectroscopic techniques. Numerical simulations and analytical calculations constitue the backbone of the experiments. In summary, the proposed project will establish a novel route for plasmonic device fabrication and lead to a deeper understanding of light-matter interaction at the nanoscale.

小型化的进展构成了信息技术技术创新的巨大动力，渗透到所有经济领域。未来的IT系统将依靠照片而不是触发纳米级光学设备的需求的电子。等离子体纳米结构构成了一种有希望的方法，因为它们的最小几何特征不受衍射极限的限制。该项目将着重于设计，制造和测试基于塑料纳米结构的三二维纳米驱动器。所提出的设备是手性圆极化转换器和手性的全光转换器，将电信光降低到芯片上的可见光，第二和第三次谐波产生。极化敏感的波导将用于从近距离野外进行内和外耦合。设备原型的设想足迹将小于1μm^2，构建了朝着设备微型化的关键步骤。设备制造需要完整的几何形状控制与所需材料特性的结合。在这方面，用电子直接写作是最佳选择。虽然集中的电子设备可以说明最低结构特征，但直接写作可以在一个步骤中访问三个维度。结合基于离子梁的模式复合设备，可以在一个真空室内制造。由于等离子体系统需要具有金属光学响应，因此优选低损耗，因此将对它们在可见范围内的光学响应进行优化。材料和设备将以各种光谱技术来表征。数值模拟和分析计算是实验的主干。总而言之，拟议的项目将建立一种新颖的静脉体型装置制造途径，并使对纳米级的光 - 物质相互作用有更深入的了解。