Nonlinear optics at the nanoscale: theoretical and computational investigations

纳米尺度的非线性光学：理论和计算研究

• 批准号: RGPIN-2017-06101
• 负责人: Ramunno, Lora
• 金额: $ 2.62万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=712053
• 关键词: Nonlinear; optics; nanoscale; theoretical; computational

The field of nonlinear optics has been intensely investigated since the advent of the laser in the 1960s. It entails the study of strong light interaction with matter, where exotic effects, such one colour of light converting to another colour, can be realized. Ever improving laser technology and fabrication methods have opened the door to nonlinear optics at very small length scales down to a billionth of a meter, called “the nanoscale”, for myriad applications. Underlying these technological developments is a need to understand the details of how light interacts nonlinearly with materials, and how to use that interaction to design processes and devices for further technological advances. The overarching, long-term goal of Dr. Ramunno's research program is to use and develop state-of-the-art theoretical and computational techniques to investigate nonlinear optics at the nanoscale, in several research areas in photonics. Over five years, she will train graduate students, who will work with undergraduates and postdoctoral fellows toward the following scientific objectives. The first is to understand how images of cells and tissues are formed using a microscopy based on nonlinear optics, including what are the nanoscale limitations of such imaging, and how these may be overcome for applications such as understanding disease processes and early disease diagnosis. The second objective is to understand the mechanisms underlying laser machining of materials, and how this nonlinear interaction can be controlled to create new technologies, such as nanoscale 3D printing. The third is to design nanoscale devices to engineer the production of light, from the visible up to extreme ultraviolet radiation, for applications including communications, microscopy and laser machining. As the fabrication such nanoscale devices gets ever more precise, down to the one nanometer level, new paradigms of computational modelling are required, and Dr. Ramunno will develop these with her trainees. Dr. Ramunno has a proven track record in each area, as well as established collaborations with experimental and industrial colleagues. These collaborations, including with world-class researchers at uOttawa, will contribute to the success and impact of the proposed research, and provide unique and varied research and career opportunities to students. This work is made possible by her cutting edge computational tools and access to high performance computers, including the most powerful supercomputer in Canada.

自 20 世纪 60 年代激光出现以来，非线性光学领域得到了广泛的研究，它需要研究强光与物质的相互作用，从而可以实现不断改进的奇异效果，例如将一种颜色的光转换为另一种颜色。激光技术和制造方法为小至十亿分之一米的非线性光学（称为“纳米尺度”）的无数应用打开了大门，这些技术发展的背后是需要了解光如何运作的细节。与材料非线性相互作用，以及如何利用这种相互作用来设计工艺和设备，以实现进一步的技术进步。 Ramunno 博士研究计划的总体长期目标是在五年内，在光子学的多个研究领域中使用和开发最先进的理论和计算技术来研究纳米尺度的非线性光学。培训研究生，他们将与本科生和博士后研究员合作实现以下科学目标：首先是了解如何使用基于非线性光学的显微镜形成细胞和组织的图像，包括此类图像的纳米级限制。第二个目标是了解材料激光加工的机制，以及如何控制这种非线性相互作用以创造新技术，例如纳米级技术。第三种是设计纳米级设备来设计光的产生，从可见光到极紫外辐射，用于通信、显微镜和激光加工等应用。一纳米级，需要新的计算模型范式，Ramunno 博士将与她的学员一起开发这些范式。 Ramunno 博士在每个领域都有良好的记录，并与实验和工业同事建立了合作关系，包括与渥太华大学的世界级研究人员的合作，将为拟议研究的成功和影响做出贡献，并提供独特的成果。她的尖端计算工具和高性能计算机（包括加拿大最强大的超级计算机）为学生提供了各种研究和职业机会。