Nanoprobes for nano-femto optics

用于纳米飞秒光学器件的纳米探针

• 批准号: 0925591
• 负责人: Zhiwen Liu
• 金额: $ 37.24万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0925591&HistoricalAwards=false
• 关键词: Nanoprobes; nano; femto; optics

Intellectual merit: The goal of the proposed research is to develop a nonlinear nanoprobe for nano-femto scale spatiotemporal characterization of ultrafast optical near fields. The proposed nanoprobe consists of a nonlinear nanoparticle attached to a nanowire, which is in turn attached to a silica fiber taper. The nonlinearity of the nanoparticle enables temporal characterization through autocorrelation or frequency resolved optical gating measurements while the nanoscale spatial resolution is achieved through near field scanning of the nonlinear nanoparticle. We will develop two-photon fluorescent and second harmonic nanoprobes, develop and optimize nanoprobe based spatiotemporal characterization technique, and investigate the precision of the proposed nanoprobe based method. With the unique capabilities of the proposed nonlinear nanoprobes, we also plan to investigate their applications to probing several interesting ultrafast optical near fields.Broad impact: The proposed nanoprobe can significantly advance the state of the art of nano & ultrafast technology, which can in turn create far-reaching impacts in many scientific disciplines in which they play a central role. With its unique capability in providing nano-femto scale spatiotemporal mappings, the proposed nonlinear nanoprobe can find many important applications. Fundamental questions with regard to light-matter interaction in the ultrafast regime, ultrafast dynamics of complex nanostructures, and nonlinear optics in nanoscale plasmonic structures, can all benefit from the development of the proposed nanoprobe. As a result, the proposed research can have considerable impact on areas such as nonlinear optical microscopy and nanophotonics. The proposed research is highly interdisciplinary and can also provide excellent education opportunities for students.

智力价值：本研究的目标是开发一种非线性纳米探针，用于超快光学近场的纳米飞秒级时空表征。所提出的纳米探针由附着在纳米线上的非线性纳米粒子组成，纳米线又附着在二氧化硅光纤锥体上。纳米颗粒的非线性使得能够通过自相关或频率分辨光学门控测量来进行时间表征，同时通过非线性纳米颗粒的近场扫描来实现纳米级空间分辨率。我们将开发双光子荧光和二次谐波纳米探针，开发和优化基于纳米探针的时空表征技术，并研究所提出的基于纳米探针的方法的精度。凭借所提出的非线性纳米探针的独特功能，我们还计划研究它们在探测几个有趣的超快光学近场方面的应用。广泛的影响：所提出的纳米探针可以显着推进纳米和超快技术的发展水平，从而反过来在他们发挥核心作用的许多科学学科中产生深远的影响。凭借其提供纳米飞秒级时空映射的独特能力，所提出的非线性纳米探针可以找到许多重要的应用。有关超快状态下的光与物质相互作用、复杂纳米结构的超快动力学以及纳米级等离子体结构中的非线性光学的基本问题都可以从所提出的纳米探针的开发中受益。因此，所提出的研究可能对非线性光学显微镜和纳米光子学等领域产生相当大的影响。拟议的研究具有高度跨学科性，也可以为学生提供良好的教育机会。