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

摘要目的：该计划的目的是展示一种非极性氮化物级联激光器，以满足在整个未充分利用的近红外范围内设计可调的超快紧凑光源的需求。该方法消除了内置在氮化物中的极化场的不利影响，工程量子电荷传输沿着极化自由方向垂直于m-plane的GaN.智力优点：主要的科学贡献是阐明内置的极化场的氮化物近红外激光器和探测器的性能的影响。该计划将使一类新的多功能和超快的光电设备，将立即触发实际应用。新的近红外设备将有助于紧凑，负担得起的消费系统，并可能最终超过蓝色氮化物激光器的商业成功。更广泛的影响：该计划将增加7-12年级的学生从经济上处于不利地位的背景在中央印第安纳州的科学内容和光子学的方法。旨在全面推进以调查为基础的外联活动，以最大限度地扩大对多个年龄组的影响。中学科学教师将制定和试点课程计划和示范，将红外辐射的概念纳入高中课程。将为中学女生科学夏令营制定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频谱不可见区域有关的科学内容的知识的影响。综合教育计划将利用普渡大学nanoHUB.org上现有的基于网络的工具，在全球研究界传播。

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.