CAREER: Nonpolar vertical-transport III-nitride devices for near-infrared applications

摘要：目的：本项目的目的是展示一种非极性氮化物级联激光器，以填补在整个未充分利用的近红外范围内设计可调的超快速紧凑光源的需求。该方法通过在垂直于氮化镓m平面的无极化方向上进行量子电荷输运，消除了氮化物中内置极化场的不利影响。知识价值：主要的科学贡献是阐明了内置偏振场对氮化近红外激光器和探测器性能的影响。该计划将使一种新型的多功能和超快速光电器件成为可能，并将立即引发实际应用。这种新颖的近红外设备将促进紧凑、价格合理的消费系统，并最终可能超过蓝色氮化物激光器的商业成功。更广泛的影响：该项目将增加印第安纳州中部经济背景较差的7-12年级学生对光子学的科学内容和方法的了解。以调查为基础的外展活动的全面进展旨在最大限度地影响多个年龄组。中学科学教师将制定和试行将红外辐射概念纳入高中课程的课程计划和示范。将为中学女生科学夏令营开发和实施参与实践活动。将特别注意评估这些活动对发展与电磁波谱不可见区域有关的科学内容的知识的影响。这项综合教育计划将利用普渡大学nanoHUB.org上现有的网络工具，在全球研究界进行传播。

AbstractObjective: The objective of this program is to demonstrate a non-polar nitride cascade laser to fill the need for ultra-fast compact light sources tunable by design in the entire underutilized near-infrared range. The approach eliminates the adverse effects of built-in polarization fields in nitrides by engineering quantum charge-transport along the polarization-free direction perpendicular to the m-plane of GaN.Intellectual merit: The main scientific contribution is to elucidate the impact of built-in polarization fields on the performance of nitride near-infrared lasers and detectors. The program will enable a new class of versatile and ultra-fast optoelectronic devices that will immediately trigger practical applications. The novel near-infrared devices will facilitate compact, affordable consumer systems and could eventually surpass the commercial success of the blue nitride lasers.Broader impacts: The program will increase exposure of Grade 7-12 students from economically disadvantaged backgrounds in Central Indiana to the scientific content and method of photonics. A comprehensive progression of inquiry-based outreach activities was designed to maximize impact across multiple age groups. Secondary science teachers will develop and pilot lesson plans and demonstrations that incorporate concepts of infrared radiation into the high-school curriculum. Engaging hands-on activities for a science summer camp for middle-school girls will be developed and implemented. Special attention will be given to assessing the impact of these activities on the development of knowledge about the science content related to invisible regions of the electromagnetic spectrum. The integrated educational plan will leverage existing web-based tools on Purdue's nanoHUB.org for dissemination across the global research community.