Mid-infrared Semiconductor Lasers Based on Intersubband Transitions in the Valence Band of GaAs/AlAs Quantum Cascade Nanostructures

基于GaAs/AlAs量子级联纳米结构价带子带间跃迁的中红外半导体激光器

• 批准号: 0935899
• 负责人: Oana Malis
• 金额: $ 25.34万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-01-01 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0935899&HistoricalAwards=false
• 关键词: Mid; infrared; Semiconductor; Lasers; Based

ECCS-0725384O. Malis, SUNY BinghamtonIntellectual merit: This project will investigate a new class of mid-infrared quantum cascade lasers based on Carbon-doped GaAs/AlAs nanostructures. Unlike traditional quantum cascade lasers, the proposed devices utilize hole transport and intra-valence band transitions. The major objective is to exploit the unique optical properties of hole intersubband transitions to demonstrate surface-emitting lasing in the 5-10 um range. The approach will be multi-pronged, experimental and theoretical. Hole cascaded structures will be designed, grown, and characterized. The project will focus on enhancing the understanding of the physics of hole intersubband transitions and of ultrafast hole relaxation processes in the context of a well developed semiconductor system where material quality issues are minimized. Nevertheless, the acquired knowledge will also provide invaluable insights into the prospects of infrared laser light emission in other material systems, most notably in Si/SiGe, GaN, and ZnSe. This investigation will also advance the understanding of basic mechanisms involved in molecular beam epitaxy of nanostructures and in growth of high-purity Carbon-doped GaAs.Broader Impact: The proposed new device concept for mid-infrared laser emission is expected to significantly impact spectroscopic techniques for in-situ and remote trace gas sensing. Mid-infrared surface emitting lasers would enable integration of several sensors on a single chip for simultaneous detection of several gasses with immediate benefits for applications in air quality control, health monitoring, or explosive detection. This project will also offer graduate and undergraduate students at SUNY-Binghamton unique opportunities to integrate education, training and research in both the academic and industrial research environments. Particular attention will be given to enhancing the opportunities of under-represented groups in science and engineering. The faculty and graduate students will engage in outreach activities targeted at introducing material science and technology to high-school and non-science major students, as well as to the general public. A hands-on lab-based course on the fundamental and practical aspects of nanoscale science and engineering will be developed.

ECCS-0725384O。马里斯，纽约州立大学宾厄姆顿分校智力优势：该项目将研究基于碳掺杂 GaAs/AlAs 纳米结构的新型中红外量子级联激光器。与传统的量子级联激光器不同，所提出的器件利用空穴传输和价带内跃迁。主要目标是利用空穴子带间跃迁的独特光学特性来演示 5-10 um 范围内的表面发射激光。该方法将是多管齐下的，实验性的和理论性的。孔级联结构将被设计、生长和表征。该项目将侧重于在材料质量问题最小化的成熟半导体系统的背景下增强对空穴子带间跃迁和超快空穴弛豫过程物理的理解。尽管如此，所获得的知识也将为其他材料系统中红外激光发射的前景提供宝贵的见解，尤其是在 Si/SiGe、GaN 和 ZnSe 中。这项研究还将增进对纳米结构分子束外延和高纯度碳掺杂砷化镓生长所涉及的基本机制的理解。 更广泛的影响：所提出的中红外激光发射新设备概念预计将显着影响原位和远程痕量气体传感的光谱技术。中红外表面发射激光器可以将多个传感器集成在单个芯片上，从而同时检测多种气体，从而为空气质量控制、健康监测或爆炸物检测等应用带来直接好处。该项目还将为纽约州立大学宾厄姆顿分校的研究生和本科生提供独特的机会，将教育、培训和研究融入学术和工业研究环境中。将特别关注增加科学和工程领域代表性不足群体的机会。教师和研究生将开展旨在向高中生、非理科学生以及公众介绍材料科学和技术的外展活动。将开发一门关于纳米科学与工程的基础和实践方面的实践实验室课程。