Structure-Enhanced Photoluminescence and Lasing in Aggregated Silver Films Coupled to Optically Amplifying Media

与光放大介质耦合的聚集银膜中的结构增强光致发光和激光发射

• 批准号: 1404676
• 负责人: Benjamin McMorran
• 金额: $ 39万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-01 至 2019-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1404676&HistoricalAwards=false
• 关键词: Structure; Enhanced; Photoluminescence; Lasing; Aggregated

Non-technical Description: This study provides a scientific basis for the development of novel light emitting materials which are implemented to attain nanoscale lasers. The project utilizes a variety of microscopy and optical techniques to investigate the structural characteristics of these materials and their light emitting properties. The overarching goal of this study is to achieve cost efficient materials which may be readily fabricated on large scales, to yield new types of ultra-compact lasers. Students participating in this project are receiving broad interdisciplinary training in optical and materials sciences. Undergraduate students conduct research, working alongside graduate students, while learning a variety of materials fabrication and characterization techniques, computational methods and digital image analysis. The PI is leading efforts to improve undergraduate science literacy through the instruction of a newly developed course on the topic of Nanoscience and Society. The PI's commitment to increasing the representation of women in the scientific disciplines further leverages research activities to help broaden the participation of underrepresented groups.Technical Description: The project aims to develop active plasmonic materials comprising disordered silver films and amplifying media. A main challenge to implementation of random materials in device applications remains attaining materials in which nanoscale structural irregularities and local morphological variations do not impede desired device functionality. This research project addresses this challenge by aiming to develop active plasmonic materials whose optical properties are reproducibly controlled through the materials' statistical attributes. The structures under investigation comprise chemically grown aggregated silver films coupled to several model amplifying media. The approach utilizes a variety of spectroscopic, structural and numerical characterization techniques, and it intends to delineate fundamental relations between enhanced light emission and statistical structural characteristics in the fabricated materials. A set of studies aims to examine variations in light emission as the metal films evolve morphologically, and delineate scaling relations between light intensity and statistical characteristics. This part also addresses lasing phenomena in aggregated silver films coupled to amplifying media. A second set of studies addresses temperature controlled structure-enhanced plasmonic lasers, achieved in different gain systems, including plasmonic Si Raman lasers and Ag2O/Ag chromophore complexes, with the aim of developing robust control mechanisms to reliably tune amplified optical output.

非技术描述：这项研究为开发新型发光材料的开发提供了科学基础，这些材料被实施以获得纳米级激光器。该项目利用各种显微镜和光学技术来研究这些材料的结构特性及其发光特性。这项研究的总体目标是实现可能在大规模上容易制造的经济高效材料，以产生新型的超紧凑型激光器。参加该项目的学生正在接受光学和材料科学的广泛跨学科培训。本科生进行研究，与研究生一起工作，同时学习各种材料制造和表征技术，计算方法和数字图像分析。 PI通过有关纳米科学和社会主题的新课程的指导来提高本科科学素养的领导努力。 PI致力于增加妇女在科学学科中的代表性的承诺进一步利用研究活动，以帮助扩大代表性不足的群体的参与。技术描述：该项目旨在开发由无序的银色膜和扩增媒体组成的活跃等离子体材料。在设备应用中实施随机材料的主要挑战仍然达到纳米级结构不规则性和局部形态变化的材料，不会阻碍所需的设备功能。该研究项目通过旨在开发有效的等离激元材料来解决这一挑战，这些等离激元材料通过材料的统计属性可重复地控制其光学特性。所研究的结构包括化学生长的聚集银膜，并结合了几种模型扩增介质。该方法利用各种光谱，结构和数值表征技术，并打算在制造材料中描述增强的光发射与统计结构特征之间的基本关系。一组研究旨在检查光发射的变化，因为金属膜随着形态的发展而发展，并描述了光强度和统计特征之间的缩放关系。该部分还解决了与扩增媒体相结合的总膜中的激光现象。第二组研究解决了温度控制的结构增强的等离激光激光器，这些激光器在不同的增益系统中实现，包括等离子Si Raman激光器和AG2O/AG彩色团复合物，目的是开发可靠的稳健控制机制，以可靠地调节放大光学输出。