Intense laser-matter interaction and nano-photonics: from fundamentals to devices

强烈的激光与物质相互作用和纳米光子学：从基础到设备

• 批准号: 341647-2007
• 负责人: Ramunno, Lora
• 金额: $ 1.65万
• 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: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=364472
• 关键词: Intense; laser; matter; interaction; nano

The ability to shape materials on length scales as small as a billionth of a metre (the nanoscale) is opening new frontiers in science and technology. Dr. Ramunno's research is key to understanding how powerful lasers can be used to make delicate and precise "cuts" and other restructuring in materials in order to make microscopic devices that will lead to advances in areas such as information and communications technology and medicine. Her laboratory is a high-performance computer with which she uses to accurately simulate the effect of intense lasers on materials. While her longer term goal includes bulk transparent materials such as glass, she is working towards this goal by studying the effect of lasers on more exotic materials such as tiny clusters of condensed noble gas atoms. Since the latter have many properties similar to transparent materials -- but are much smaller and hence easier to simulate -- studying clusters will provide a critical stepping stone to understanding how lasers can restructure bulk solids. Dr. Ramunno's program includes expanding upon her current computer codes to handle systems of larger and larger sizes, in order to simulate material restructuring in devices for the first time.For viable optical devices, it is also critical to understand how such fabricated materials can be used to direct light through them, particularly when the features are of sizes close to the wavelength of light. Dr. Ramunno will characterize and design such nanoscale optical devices through new computational techniques she has developed.  She will investigate the effect of unavoidable fabrication imperfections and precise feature shapes on device performance.An integral part of her research program is the training of three graduate students. Two will work on aspects of material restructuring by intense lasers, and the third in characterizing and designing nano-optical structures.

在十亿分之一米（纳米级）的长度尺度上塑造材料的能力正在开辟科学和技术的新前沿。Ramunno博士的研究是理解如何使用强大的激光来进行精细和精确的“切割”和材料的其他重组的关键，以便制造微观设备，从而导致信息和通信技术以及医学等领域的进步。她的实验室是一台高性能计算机，她用它来精确地模拟强激光对材料的影响。虽然她的长期目标包括玻璃等大块透明材料，但她正在通过研究激光对更奇特材料的影响来实现这一目标，例如凝聚惰性气体原子的微小团簇。由于后者具有许多类似于透明材料的特性-但要小得多，因此更容易模拟-研究团簇将为理解激光如何重组大块固体提供关键的垫脚石。Ramunno博士的计划包括扩展她目前的计算机代码来处理越来越大尺寸的系统，以便首次模拟设备中的材料重组。对于可行的光学设备，了解如何使用这种制造的材料来引导光通过它们也很关键，特别是当特征的尺寸接近光波长时。Ramunno博士将通过她开发的新计算技术来表征和设计这种纳米级光学器件。她将研究不可避免的制造缺陷和精确的特征形状对器件性能的影响。她的研究计划的一个组成部分是培训三名研究生。两个将致力于通过强激光进行材料重组方面的工作，第三个将致力于表征和设计纳米光学结构。