ADVANCED OPTICAL ANTENNAS: SWITCHABLE, SPASING AND GAIN-ASSISTED

先进的光学天线：可切换、间隔和增益辅助

• 批准号: 1201687
• 负责人: Fawwaz Habbal
• 金额: $ 36万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-05-01 至 2015-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1201687&HistoricalAwards=false
• 关键词: ADVANCED; OPTICAL; ANTENNAS; SWITCHABLE; SPASING

ObjectiveDue to diffraction, conventional lenses focus light to spots no smaller than roughly half the wavelength. Optical antennas can overcome this limit, spanning the mismatch between the wavelength of light and the dimensions of nanostructures. The PI's goals are to demonstrate advanced optical antennas, to educate graduate and undergraduate students in this growing field, and to disseminate the results to the wider community.Intellectual MeritThe PI proposes to develop optical antennas with three important new capabilities. 1). The PI proposes to demonstrate optical antennas that can be optically switched. 2). The PI proposes to demonstrate surface plasmon lasers based on optical antennas integrated with plasmonic collimators. 3). The PI proposes to demonstrate surface enhanced Raman scattering (SERS) from molecules adsorbed to optical antennas that are integrated with a gain medium. The PI anticipates that significantly stronger SERS spectra will result due to the gain counterbalancing metal loss.Broader ImpactThere exists a move to chips that integrate multiple photonic/plasmonic structures to function as a system. The proposed work will contribute to this goal by introducing new capabilities to plasmonic devices. The project integrates education and outreach with research. The PI will incorporate results from the program into an optics course. The PI will train undergraduate and graduate students. The project will therefore create not only the science, but also the human infrastructure required for future advances. Lastly, demonstrations to the public by the PI and his team will be made at outreach events at local science museums.

由于衍射，传统透镜将光聚焦到不小于波长的大约一半的光斑。光学天线可以克服这一限制，跨越光波长和纳米结构尺寸之间的失配。PI的目标是展示先进的光学天线，教育研究生和本科生在这个不断发展的领域，并传播的结果，以更广泛的社区。智力MeritThe PI建议开发具有三个重要的新功能的光学天线。1）。PI建议演示可以进行光学切换的光学天线。2）。PI建议演示基于与等离子体准直器集成的光学天线的表面等离子体激光器。（3）第三章。PI建议演示吸附到与增益介质集成的光学天线上的分子的表面增强拉曼散射（Sers）。PI预计，由于增益抵消了金属损失，将产生明显更强的Sers光谱。更广泛的影响存在一种集成多个光子/等离子体结构的芯片作为一个系统。拟议的工作将有助于这一目标，通过引入新的能力，等离子体激元设备。该项目将教育和外联与研究结合起来。PI将把该计划的结果纳入光学课程。PI将培训本科生和研究生。因此，该项目不仅将创造科学，还将创造未来进步所需的人类基础设施。最后，PI及其团队将在当地科学博物馆的外展活动中向公众演示。