CAREER: Multidimensional THz Imaging and Collaborative Research Oriented Education

9984896 Chevile使用光电子产生的脉冲在远红外(FIR)光谱区域成像和表征的研究项目将被整合到课程中，为本科生提供研究机会。研究目标：基于对散射辐射的相位相干探测，将开发一种在远红外光谱区域进行宽带成像的技术。应用包括生物医学成像、无损评估和非接触式半导体表征。这一新方法将解决空间分辨率、样品限制和化学含量测绘问题。提出的技术是基于现有的产生特征良好的太赫兹辐射脉冲的能力。具体地说，研究计划将：通过增强现有技术，将紧凑、可靠的太赫兹源的可用功率增加至少两个数量级，并合作研究磁性增强的太赫兹源。开发新的源，包括偶极天线阵列，与可编程相位调制器集成，以产生光学可操纵的远红外辐射。这些阵列源与电光成像系统相结合，将产生具有类孤子性质的自由空间电磁波，并应用于太赫兹层析成像。现有的利用太赫兹脉冲范围进行直接散射测量的工作将扩展到使用多个源和探测器来测量反向散射。这一建议试图打开一个未得到充分利用的电磁频谱区域，对实际工程应用产生深远的影响，涉及广泛的学科。教育事业目标：这项建议的教育部分的论点是，大多数学生缺乏对研究中所需的需求和跨学科任务的实际准备。一个独特的光子学课程，将基于PI小规模实施的为期三年的模式，将在一年级或二年级向学生传授实用技术技能。本课程将提供光子学跨学科领域的培训，特别是：利用实用的、动手的研究培训，采用学徒式模式，类似于一年级和二年级的医学教学医院。通过基于问题的学习实验课程，向初级阶段的学生介绍光子学研究。为高年级学生提供自主研究的机会。使用有效的教育方法，包括脚手架、协作学习和研究实践社区，针对科学、数学、工程和技术(SMET)中代表性不足的学生，以提高留存率。将特别努力招募女性参加该计划。以易于输出到其他方案或学科领域的结构为基础，使用来自行业和演绎顾问的代表进行评估，并规定传播开发的教育材料。*

9984896ChevilleA research program using optoelectronically generated pulses for imagingand characterization in the far infrared (FIR) spectral region will beintegrated into a curriculum providing research opportunities forundergraduate students. Research Career Goals: A technique for broad bandwidth imaging in the farinfrared spectral region will be developed based on phase coherentdetection of scattered radiation. Applications include biomedicalimaging, nondestructive evaluation, and noncontact semiconductorcharacterization. This new approach will address spatial resolution,sample limitations, and chemical content mapping. The proposed techniqueis based on the existing ability to generate well characterized pulses ofTHz radiation.?? Specifically the research program will:Increase the power available in a compact, reliable THz source by atleast two orders of magnitude through enhancement of existing technologies,and collaborative work on magnetically enhanced THz sources.Develop new sources including dipole antenna arrays to be integrated witha programmable phase modulator to generate optically steerable far infraredradiation. These array sources combined with electro-optic imaging systemswill generate free space electromagnetic waves with soliton-like propertiesand applied to applications inTHz tomographic imaging.Existing work utilizing a THz impulse range for direct scatteringmeasurements will be extended to measure inverse scattering using multiplesources and detectors.This proposal seeks to open an underutilized region of the electromagneticspectrum to practical engineering applications with profound impact acrossa wide spectrum of disciplines. Educational Career Goals: The thesis of the educational component of thisproposal is that most students lack practical preparation for the demandingand cross-disciplinary tasks required in research. A unique photonicscurriculum, based on a model implemented by the PI on a small scale forthree years, will be developed in which students will be given practicaltechnical skills during the freshman or sophomore years. This curriculumwill provide training in the cross-disciplinary area of photonics andspecifically:Make use of practical, hands-on research training in an apprenticeshipmodel, similar to the teaching hospital of medicine at the freshman andsophomore level. Introduce students at the junior level to photonics research through aproblem based learning laboratory course. Provide independent research opportunities for senior students. Use effective pedagogies for education including scaffolding,collaborative learning, and communities of research practice to targetunder-represented students in Science, Mathematics, Engineering, andTechnology (SMET) to improve retention. Particular efforts will be made torecruit women for the program. Be based on a structure that is easily exportable to other programs orsubject areas, involve the use of representatives from industry andeducational consultants for assessment, and provide for the disseminationof the developed educational materials.***