Collaborative Research: 2D ferroelectric nonlinear metasurface holograms

合作研究：二维铁电非线性超表面全息图

• 批准号: 2226875
• 负责人: Jie Gao
• 金额: $ 22.21万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2226875&HistoricalAwards=false
• 关键词: Collaborative; Research; 2D; ferroelectric; nonlinear

Holography has become a promising approach for image recording and reconstruction with a wide range of applications in many fields such as optical communication, data storage, information security, medical diagnosis, and color displays. Metasurfaces have been widely used to realize ultracompact and efficient nonlinear optical holograms for the generation of complex optical beams and holographic images. However, the existing nonlinear metasurface holograms suffer from several issues such as low conversion efficiency, high absorption loss, and large thickness, which greatly hinder their practical uses in integrated optical devices. In this project, a new type of switchable nonlinear metasurface holograms based on 2D materials will be demonstrated with high conversion efficiency but only nanometer thickness. This research will benefit many promising photonic applications in optical data memory and logic, optical computing, quantum information processing, and flat optoelectronic devices. This project also includes educational activities for training and mentoring graduate and undergraduate students, recruiting underrepresented and female students, and participating outreach activities for high school students.Metasurfaces have been utilized to realize nonlinear holograms for coherent generation of optical beams and holographic images at new frequencies. However, the existing nonlinear plasmonic metasurface holograms suffer from low conversion efficiency and high absorption loss, while the dielectric metasurfaces have the thickness limited to several hundreds of nanometers. The goal of this project is to explore a new type of atomically thin 2D ferroelectric nonlinear metasurface holograms with both amplitude and phase modulations for achieving reconfigurable functionalities in optical beam generation and holographic image reconstruction with high conversion efficiency. In this project, the design, sample fabrication, and experimental characterization of 2D ferroelectric holograms will be conducted to demonstrate the production of nonlinear optical beams and the reconstruction of complex holographic images. Several unique types of 2D ferroelectric materials are utilized to construct the metasurface holograms with distinguished switching functionalities in nonlinear responses. This project will reveal the underlying physics of switchable light-matter interactions at the atomic scale between structured light and 2D materials.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

全息术已经成为一种很有前途的图像记录和再现方法，在光通信、数据存储、信息安全、医疗诊断和彩色显示等领域有着广泛的应用。亚曲面已被广泛用于实现超紧凑、高效的非线性光学全息图，用于产生复杂的光束和全息图像。然而，现有的非线性亚表面全息图存在转换效率低、吸收损耗大、厚度大等问题，极大地阻碍了其在集成光学器件中的实际应用。在本项目中，将展示一种新型的基于2D材料的可切换非线性亚表面全息图，转换效率高，但厚度仅为纳米级。这一研究将使光子在光数据存储和逻辑、光计算、量子信息处理和平板光电子器件等领域具有广阔的应用前景。该项目还包括培训和指导研究生和本科生的教育活动，招收代表不足的学生和女学生，以及参与高中生的外展活动。元表面已被用于实现非线性全息图，以在新的频率上相干产生光束和全息图像。然而，现有的非线性等离子体亚表面全息图存在转换效率低、吸收损耗大等问题，而介电亚表面的厚度仅限于几百纳米。本项目的目标是探索一种新型的原子薄的二维铁电非线性亚表面全息图，实现高转换效率的光束产生和全息再现的可重构功能。在这个项目中，我们将进行二维铁电全息图的设计、样品制作和实验表征，以演示非线性光束的产生和复杂全息图像的再现。利用几种独特的二维铁电体材料制作了在非线性响应中具有显著开关功能的亚表面全息图。该项目将揭示结构光和2D材料之间在原子尺度上可切换的光-物质相互作用的基本物理。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。