Terahertz Plasmonic Subwavelength Photonics

太赫兹等离子体亚波长光子学美国俄克拉荷马州立大学0601574学术成就：本项目主要研究和开发具有太赫兹亚波长微结构的二维等离子体光子学。表面等离子体激元与太赫兹光谱学的结合将为太赫兹表面等离子体激元的性质及其光电应用的基础研究提供一个富有成果的领域。该计划包括多个研究目标：（1）PI继续专注于亚波长等离子体结构的共振太赫兹传输和太赫兹表面等离子体的表面效应。将进行一项概念验证研究，以测试在生物传感应用中使用太赫兹表面等离子体的能力。(2)可调谐太赫兹表面等离子体激元将被研究。这些将是独特的，因为半导体将被光学选通以表现出瞬时金属特性，这反过来又支持表面等离子体的共振激发。(3)局域太赫兹表面等离子体激元将在一些亚波长等离子体激元结构进行研究。更广泛的影响：太赫兹等离子体激元学的进展将使新型太赫兹光电和光子器件的开发成为可能，这将影响广泛的学科。PI将寻求与公司合作开发基于太赫兹的等离子体传感器和光电器件，并寻求商业化机会。教育部分包括为研究生、本科生和高中生开发新课程和培训。将为俄克拉荷马州州立大学参与光子学项目的学生开发一门新的等离子体光子学研究生课程。为了吸引优秀的本科生，将定期为高中生及其家长，特别是俄克拉荷马州的美洲土著学生和家长提供一个洁净室开放日。

Terahertz Plasmonic Subwavelength PhotonicsWeili ZhangOklahoma State University0601574Intellectual Merit: This project focuses on fundamental investigation and development of two-dimensional plasmonic photonics with subwavelength microstructures functioning at terahertz frequencies. The combination of surface plasmons and terahertz spectroscopy will be a fruitful field in fundamental understanding of both the properties of terahertz surface plasmons and their optoelectronic applications. This program encompasses multiple research objectives: (1) The PI continues his focus on resonant terahertz transmission of subwavelength plasmonic structures and the surface effects of terahertz surface plasmons. A proof-of-concept study will be undertaken to test the capability of using terahertz surface plasmons in biosensing applications. (2) Tunable terahertz surface plasmons will be investigated. These would be unique in that semiconductors will be optically gated to exhibit instantaneous metallic properties, which in turn support the resonant excitation of surface plasmons. (3) Localized terahertz surface plasmons will be investigated in a number of subwavelength plasmonic structures. Broader Impacts: Advances in terahertz plasmonics will enable development of novel terahertz optoelectronic and photonic devices that will impact a broad range of disciplines. The PI will seek collaborations with companies in developing terahertz-based plasmonic sensors and optoelectronic devices, and pursuing commercialization opportunities. The educational component consists of new course development and training for graduate, undergraduate and high school students. A new graduate level course on plasmonic photonics will be developed for students involved in the photonics program at the Oklahoma State University. A cleanroom open house will be offered regularly to high school students and their parents, particularly the Oklahoma Native American students and parents in order to attract excellent undergraduate students.