CAREER: High-Efficiency Mid-Infrared Diode Lasers Incorporating Novel Metallic Nanoparticle-Enhanced Tunnel Junctions

职业：采用新型金属纳米粒子增强隧道结的高效中红外二极管激光器

• 批准号: 0954732
• 负责人: Seth Bank
• 金额: $ 40万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-02-01 至 2016-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0954732&HistoricalAwards=false
• 关键词: CAREER; Efficiency; Mid; Infrared; Diode

Objective: The objective of this research is to address a fundamental issue that pervades modern optoelectronic and photovoltaic devices: power conversion efficiency. The efficiency of highperformance photonic devices is typically limited by a combination of electrical resistance and optical absorption. The approach of this research is to combine photonics with nanotechnology to dramatically enhance the performance of lasers that emit in the mid-infrared portion of the electromagnetic spectrum. Such laser sources will find manifold applications in medicine, emissions monitoring, communications, etc.Intellectual Merit: Recent advances in mid-infrared diode lasers are hampered by the optical absorption of free holes, which increases power consumption and degrades performance. This interdisciplinary approach couples nanostructured materials science with semiconductor physics to surmount this intrinsic limitation. Semimetallic nanostructures offer the capability to dramatically reduce the number of free holes that are required in edge emitting diode lasers, substantially reducing the optical loss, and enhancing power conversion efficiency.Broader Impact: This research will produce a transformative photonic device paradigm that is applicable to a broad range of other problems in solid state lighting, solar power generation, and green computing/communications. The effort will integrate the proposed research with courses and outreach activities, exposing hundreds of talented students at the elementary, high school, undergraduate, and graduate levels to cutting edge photonics and nanoscience research to inspire them to pursue science and engineering careers. This work will also develop an undergraduate research program in photonicsfor women and underrepresented minorities.

目的：这项研究的目的是解决一个遍布现代光电和光伏设备的基本问题：功率转换效率。高性能光子设备的效率通常受电阻和光吸收的组合限制。这项研究的方法是将光子学与纳米技术相结合，以显着增强电磁频谱中中红外部分发射的激光的性能。这种激光来源将在医学，排放监测，通信等中找到多种应用。智力优点：中红外二极管激光器的最新进展受到自由孔的光吸收的阻碍，从而增加了功耗和降低性能。这种跨学科的方法将纳米结构的材料科学与半导体物理学融合在一起，以克服这种内在的限制。 Semimetallic nanostructures offer the capability to dramatically reduce the number of free holes that are required in edge emitting diode lasers, substantially reducing the optical loss, and enhancing power conversion efficiency.Broader Impact: This research will produce a transformative photonic device paradigm that is applicable to a broad range of other problems in solid state lighting, solar power generation, and green computing/communications.这项努力将把拟议的研究与课程和外展活动相结合，在小学，高中，本科和研究生水平上揭露数百名才华横溢的学生，以使他们启发他们从事科学和工程职业。这项工作还将为妇女和代表性不足的少数群体制定一项针对光子学的本科研究计划。