Mid-scale RI-1 (M1:IP): NSF National EXtreme Ultrafast Science (NEXUS) Facility

中型 RI-1 (M1:IP)：NSF 国家极限超快科学 (NEXUS) 设施

• 批准号: 1935885
• 负责人: Lawrence Baker
• 金额: $ 950万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-10-01 至 2025-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1935885&HistoricalAwards=false
• 关键词: Mid; scale; RI; M1; IP

With support from the NSF Division of Chemistry through the Mid-scale Research Infrastructure-1 program, a team led by Robert Baker at The Ohio State University (OSU) is implementing the NSF National EXtreme Ultrafast Science (NEXUS) Facility - a beyond-the-state-of-the-art national XUV light source to serve the scientific and engineering communities as an open-access user facility. This light source will be coupled to a versatile array of experimental capabilities, designed to facilitate transformative progress in areas of national priority with emphasis on energy conversion and quantum information science. This national facility brings new technology in high-power lasers to the US for the first time. This mid-scale infrastructure bridges the gap between tabletop instruments and large-scale facilities such as free electron lasers and synchrotrons. This facility also brings new capabilities to the broader community and contributes to US competitiveness in the global landscape. Upon completion, the facility will be available to researchers seeking new insights across chemistry, physics, materials science, and other disciplines. At the heart of this facility is a new laser technology for producing extreme ultraviolet and soft x-ray photon energies at repetition rates of hundreds of kilohertz with average power exceeding one kilowatt. The combination of attosecond time resolution, high energies, and high repetition rates enables measurements that currently cannot be made with existing technology in a laboratory setting. The facility will provide the following experimental platforms with attosecond to femtosecond time resolution, depending on the experiment: 1) X-Ray Absorption/Reflection Spectroscopy, 2) X-Ray Magnetic Circular Dichroism, 3) Scanning Tunneling Microscopy, 4) Angle-Resolved Photoemission Spectroscopy, and 5) Laser-Induced Electron Diffraction. Applications include such scientific challenges as biomimetic photosynthesis and new quantum information technologies. Enabling these applications is the ability to control matter at the scale of individual electrons and atoms in systems that are far from equilibrium. This project directly responds to community-identified grand challenges requiring observation of charge and spin transport in relevant materials on the attosecond timescale with sub-nanometer spatial resolution.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.

在NSF化学部通过中期研究基础设施1计划的支持下，由俄亥俄州立大学罗伯特·贝克（Robert Baker）领导的团队正在实施NSF Nation National Extrace Ultrefast Science（Nexus）设施 - - 最终的国家XUV光源，以开放访问用户设施为科学和工程社区服务。该光源将与一系列多功能的实验能力耦合，旨在促进国家优先领域的变革性进步，重点是能量转换和量子信息科学。该国家设施首次将新技术带到了美国。这种中尺度的基础设施弥合了桌面仪器与大规模设施（例如免费电子激光器和同步基因）之间的差距。该设施还为更广泛的社区带来了新的能力，并为美国在全球景观中的竞争力做出了贡献。完成后，该设施将为寻求化学，物理，材料科学和其他学科的新见解的研究人员提供。该设施的核心是一种新的激光技术，用于以数百千洛茨的重复速率生产极端的紫外线和柔软的X射线光子能量，平均功率超过1千瓦。 ATTSENT时间分辨率，高能量和高重复率的结合实现了目前无法在实验室环境中使用现有技术进行的测量。该设施将根据实验提供以下实验平台，并以触觉到飞秒的时间分辨率，具体取决于：1）X射线吸收/反射光谱，2）X射线磁性圆形二色性，3）扫描隧道显微镜，4）角度分辨光发射光谱和5）激光诱导的电子衍射。应用包括诸如仿生光合作用和新量子信息技术之类的科学挑战。启用这些应用是能够以远离平衡的系统中单个电子和原子的规模来控制物质。该项目直接应对社区识别的宏伟挑战，需要在Attosentime-timecale上观察指控和旋转运输，并具有子纳米空间空间分辨率。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子来进行评估的支持。优点和更广泛的影响审查标准。

项目成果

Sub-two-cycle gigawatt-peak-power LWIR OPA for ultrafast nonlinear spectroscopy of condensed state materials

用于凝聚态材料超快非线性光谱的亚二周期千兆瓦峰值功率长波红外 OPA

• DOI: 10.1364/ol.500550
• 发表时间: 2023
• 期刊: Optics Letters
• 影响因子: 3.6
• 作者: Leshchenko, Vyacheslav;Li, Sha;Agostini, Pierre;DiMauro, Louis F.
• 通讯作者: DiMauro, Louis F.

Extreme Ultraviolet Reflection-Absorption (XUV-RA) Spectroscopy: Probing Dynamics at Surfaces from a Molecular Perspective

极紫外反射吸收 (XUV-RA) 光谱：从分子角度探测表面动力学

• DOI: 10.1021/acs.accounts.1c00765
• 发表时间: 2022
• 期刊: Accounts of chemical research
• 影响因子: 18.3
• 作者: Biswas, Somnath;Baker, L. Robert
• 通讯作者: Baker, L. Robert