Compact Whispering-Gallery TeraHertz Emitter

紧凑型 Whispering-Gallery 太赫兹发射器

• 批准号: 1231314
• 负责人: Mona Jarrahi
• 金额: $ 33万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1231314&HistoricalAwards=false
• 关键词: Compact; Whispering; Gallery; TeraHertz; Emitter

Proposal summaryWe propose to design, fabricate, and experimentally demonstrate a millimeter-scale, continuous-wave THz emitter based on a whispering-gallery resonator that is pumped by a standard telecom-compatible infrared light. Unlike existing THz sources based on nonlinear optical effects, where enhancement of nonlinear optical phenomena is by compressing light into ultra-short pulses our enhancement mechanism is based on multiple recirculation of an IR light in a high quality-factor whispering-gallery resonator enabling efficient THz generation.Intellectual merit:The proposed work presents an entirely new perspective on the potential use of whispering-gallery resonators to radically improve the performance of existing THz sources. Theoretical investigations provide a deep understanding of fundamental conversion efficiency limitations of whispering-gallery enhanced THz emitters based on parametric oscillation and difference frequency generation. Additionally, the experimental efforts provide an intuitive insight to practical constraints and solutions to develop proper THz couplers and waveguides.Broader Impact:The success of the proposed research will enable high-performance medical imaging, biological sensing, security screening and chemical identification systems.Integration of education with research activities:Undergraduate students and summer interns will be recruited for the research activities, special priority will be given to women and the members of underrepresented groups. New graduate courses will be developed and new teaching modules will be included in undergraduate courses, an update on our research results and educational tutorials will be disseminated to the public via easy-to-navigate web pages, bi-annual seminars and open house visits and scientific demos will be arranged for high school students.

提案摘要我们建议设计、制造和实验演示一种基于回音壁谐振器的毫米级连续波太赫兹发射器，该谐振器由标准电信兼容红外光泵浦。与基于非线性光学效应的现有太赫兹源不同，在现有的太赫兹源中，非线性光学现象的增强是通过将光压缩成超短脉冲来实现的，我们的增强机制基于红外光在高品质因数回音壁谐振器中的多次再循环，从而实现高效的太赫兹智力价值：这项工作提出了一个全新的视角，即回音壁谐振器的潜在用途，以从根本上提高现有太赫兹源的性能。理论研究提供了对基于参量振荡和差频生成的回音壁增强型太赫兹发射器的基本转换效率限制的深入理解。此外，实验工作还为开发合适的太赫兹耦合器和波导的实际约束和解决方案提供了直观的见解。更广泛的影响：拟议研究的成功将实现高性能医学成像、生物传感、安全筛查和化学识别系统。集成教育与研究活动：研究活动将招募本科生和暑期实习生，特别优先考虑妇女和代表性不足的群体成员。新的研究生课程将被开发，新的教学模块将被纳入本科课程，我们的研究成果和教育教程的最新信息将通过易于浏览的网页、每两年一次的研讨会和开放日参观向公众传播，将为高中生安排科学演示。