CAREER: Next Generation Photomixer-Based Terahertz Sources

职业：下一代基于光混合器的太赫兹源

• 批准号: 1054454
• 负责人: Mona Jarrahi
• 金额: $ 40万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-03-01 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1054454&HistoricalAwards=false
• 关键词: CAREER; Next; Generation; Photomixer; Based

Objective: This CAREER project aims to address the output power limitation of existing photomixers by investigating a new generation of plasmonic distributed Ge photomixers pumped at telecom wavelengths. By tackling the major obstacle of thermal breakdown of conventional photomixers, the proposed technology is expected to offer terahertz power levels that are orders of magnitude higher than is currently available from existing technologies.Intellectual Merits: In this research plan, the PI will investigate, for the first time, the use of Ge as a promising candidate to tackle the thermal breakdown problem of photomixers. The PI also aims to investigate the use of distributed plasmonic contact electrodes to further improve the quantum efficiency of Ge photomixers. Plasmonic electrodes are expected to significantly enhance the pump coupling efficiency, while enabling ultra-high-speed collection of photo-generated carriers. Moreover, distributed photomixer architectures mitigate the non-ideal effects associated with the high intensity optical pumps, such as the carrier screening effect and excessive heating.Broad Impacts: Promising application of the terahertz source is in development of high-performance terahertz imaging and spectrometry systems. The educational component of this CAREER program intends to integrate education with research activities in the emerging field of terahertz technology. New graduate courses will be developed and undergraduates will be exposed to basic terahertz concepts through teaching modules, summer programs and senior design projects. Efforts in outreach, K12 activities, recruitment and retention of women, and under-represented minorities, will increase the supply of terahertz engineers and scientists, and further broaden the influence of the program.

目的：该职业项目旨在通过调查新一代的等离子分布式GE摄影仪来解决现有光电蛋白的输出功率限制。通过解决常规摄影剂热分解的主要障碍，预计拟议的技术将提供比现有技术中目前可用的数量级的Terahertz功率水平。IntlectualForest。第一次将GE用作有前途的候选人解决​​摄影师的热分解问题。 PI还旨在研究分布式等离子接触电极的使用，以进一步提高GE摄影剂的量子效率。等离子电极有望显着提高泵耦合效率，同时可以超高速度的光载体收集。此外，分布式光电物体系结构减轻与高强度光泵相关的非理想效应，例如载体筛选效果和过度供暖。 。该职业计划的教育部分旨在将教育与Terahertz技术新兴领域的研究活动相结合。将开发新的研究生课程，并通过教学模块，夏季计划和高级设计项目来了解基本的Terahertz概念。宣传，K12活动，招募和保留妇女的努力以及代表性不足的少数民族将增加Terahertz工程师和科学家的供应，并进一步扩大该计划的影响力。