Collaborative Research: GOALI: Graphene THz/IR Optics: Fundamentals and Emerging Photonics Applications

合作研究：GOALI：石墨烯太赫兹/红外光学：基础知识和新兴光子学应用

• 批准号: 1411107
• 负责人: Tony Heinz
• 金额: $ 29.27万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1411107&HistoricalAwards=false
• 关键词: Collaborative; Research; GOALI; Graphene; THz

Non-technical Description: Graphene is an ultrathin material made of pure carbon atoms arranged in a honeycomb structure of single atom thickness. It has unusually high electrical conductivity and has been investigated as the basis of new electronic devices. The high speed and fast response of the electrons in graphene also render this material an attractive candidate for controlling electromagnetic radiation in the terahertz and infrared, for which the electric field oscillates on a time scale shorter than a millionth of a millionth of a second. In this project, researchers at two academic institutions and the IBM Research Division aim to gain fundamental understanding into how electrons in graphene respond to electric fields on a very short time scale and to apply this understanding to develop new devices for controlling electromagnetic radiation in the terahertz and infrared. This spectral region, while very useful for purposes such as environmental monitoring, does not currently benefit from technologies comparable to those available for electromagnetic radiation at either higher or lower frequency. The project provides graduate and undergraduate students with training in an integrated academic-industrial research setting, allowing the students to benefit from the special expertise available in both types of institution.Technical Description: This GOALI project investigates light-matter interactions of graphene and nanostructured graphene in the terahertz and infrared region of the electromagnetic spectrum. The goal of this research is to obtain a thorough understanding of the electronic response of graphene in the region of strong free-carrier processes and Pauli blocking of the interband transitions. These investigations on the fundamentals of the graphene electromagnetic response are complemented by studies of the use of graphene for basic building blocks of different photonic devices, including light modulators. The approaches include advanced spectroscopy techniques for characterization of both the static and dynamic response of graphene in the terahertz-infrared spectral region and the development of high-quality gated graphene samples and structures. In this integrated academic-industrial team, Professor Heinz leads the Fourier-transform infrared spectroscopy measurements of graphene materials and structures and also has responsibility for studies of photonics applications; Professor Shan leads the terahertz time-domain spectroscopy measurements and has responsibility for studies of the fundamental optical response of graphene; the industrial participants at IBM Research provide materials and fabrication capabilities and expertise.

非技术描述：石墨烯是一种超薄材料，由纯碳原子以单原子厚度的蜂窝结构排列而成。它具有不同寻常的高导电性，已被研究为新的电子器件的基础。石墨烯中电子的高速和快速响应也使这种材料成为控制太赫兹和红外电磁辐射的有吸引力的候选材料，在这种情况下，电场在不到百万分之一秒的时间尺度上振荡。在这个项目中，两个学术机构和IBM研究部的研究人员旨在获得对石墨烯中的电子如何在很短的时间尺度上响应电场的基本了解，并将这种了解应用于开发用于控制太赫兹和红外电磁辐射的新设备。这一光谱区域虽然对环境监测等目的非常有用，但目前还不能从可与高频或低频电磁辐射相媲美的技术中受益。该项目为研究生和本科生提供综合学术和工业研究环境的培训，使学生能够受益于这两类机构提供的特殊专业知识。技术说明：该项目研究石墨烯和纳米结构石墨烯在太赫兹和红外电磁光谱区域的光-物质相互作用。本研究的目的是彻底了解石墨烯在强自由载流子过程和带间跃迁的Pauli阻挡区域的电子响应。这些对石墨烯电磁响应基本原理的研究与石墨烯用于不同光子器件(包括光调制器)的基本构件的研究是相辅相成的。这些方法包括先进的光谱技术，用于表征石墨烯在太赫兹-红外光谱区域的静态和动态响应，以及开发高质量的门控石墨烯样品和结构。在这个一体化的学术-产业团队中，Heinz教授领导石墨烯材料和结构的傅立叶变换红外光谱测量，并负责光子学应用的研究；单教授领导太赫兹时域光谱测量，并负责研究石墨烯的基本光学响应；IBM Research的工业参与者提供材料和制造能力和专业知识。