MRI: Development of Ultrafast Diagnostic Instrumentation for Mid-IR QCL's

MRI：中红外 QCL 超快诊断仪器的开发

• 批准号: 0619548
• 负责人: Anthony Johnson
• 金额: --
• 依托单位: University of Maryland Baltimore County
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0619548&HistoricalAwards=false
• 关键词: MRI; Development; Ultrafast; Diagnostic; Instrumentation

MRI: Development of Ultrafast Diagnostic Instrumentation for Mid-IR QCL'sThis project will develop an integrated laboratory instrumentation to investigate ultrafast radiative and non-radiative processes in Quantum Cascade Lasers (QCL's) and related semiconductor structures, and to provide feedback for optimizing composition, structure, and manufacturing techniques. It will interface with, and analyze products from a MOCVD (Metallo-Organic Chemical Vapor Deposition) foundry at University of Maryland Baltimore County (UMBC) in which we are fabricating room-temperature QCL's with excellent properties. It will comprise an ultrafast mid-infrared (mid-IR) tunable pump-probe apparatus, covering the spectral range 3 to 12 microns, with 180 fs duration pulses, to measure quantum state relaxation times and loss mechanisms. Development will build upon existing ultrafast visible/near-IR lasers, optical parametric amplifiers and other photonics instrumentation in UMBC's Ultrafast Optics & Optoelectronics Research Laboratory, to create ultrashort mid-IR spectroscopic probing pulses. Mid-IR technology is used in sensing molecular spectral signatures associated with medical diagnosis, environmental monitoring, and chemical or biological hazards. QCL researchers who collaborate with UMBC as members of the new NSF ERC, "MIRTHE" (Mid-IR Technologies for Health and the Environment), need diagnostic capabilities such as described here, and have committed to its use. Intellectual merit will consist of improved understanding of radiation processes in QCL's and similar semiconductor structures, and in developing advanced, more efficient devices. Capabilities will be made available to universities and commercial developers. The broader impacts of developing new diagnostic capabilities will derive from its use in training graduate students at multiple universities in the physics and engineering of these new classes of intricate quantum structures, which are becoming increasingly important in the scientific, commercial, and government arenas. Secondly, through close interactions with other researchers in the field, valuable improvements in mid-IR radiation sources will diffuse into the general marketplace relating to the health industries, environmental monitoring, and homeland defense.

磁共振成像：中红外量子级联激光器超快诊断仪器的开发本项目将开发一种综合实验室仪器，用于研究量子级联激光器（QCL）和相关半导体结构中的超快辐射和非辐射过程，并为优化成分，结构和制造技术提供反馈。它将与位于马里兰州巴尔的摩县（UMBC）的MOCVD（金属有机化学气相沉积）铸造厂的产品进行接口和分析，我们正在制造具有优异性能的室温QCL。它将包括一个超快中红外（中红外）可调谐泵浦探测装置，覆盖3至12微米的光谱范围，具有180 fs持续时间的脉冲，以测量量子态弛豫时间和损耗机制。开发将建立在现有的超快可见/近红外激光器，光学参量放大器和其他光子仪器在UMBC的超快光学光电子研究实验室，以创建超短中红外光谱探测脉冲。中红外技术用于检测与医疗诊断、环境监测和化学或生物危害相关的分子光谱特征。与UMBC合作的QCL研究人员作为新的NSF ERC“MIRTHE”（用于健康和环境的中红外技术）的成员，需要这里描述的诊断能力，并致力于使用它。智力价值将包括提高对QCL和类似半导体结构中辐射过程的理解，以及开发先进的，更有效的设备。这些能力将提供给大学和商业开发人员。开发新的诊断能力的更广泛的影响将来自于它在多所大学的物理学和工程学方面的研究生培训，这些新的复杂量子结构在科学，商业和政府领域变得越来越重要。其次，通过与该领域其他研究人员的密切互动，中红外辐射源的有价值的改进将扩散到与健康产业，环境监测和国土防御相关的一般市场。