New Materials and Methods for Tunable Mid-Infrared Laser Fabrication

可调谐中红外激光制造的新材料和方法

• 批准号: 9802396
• 负责人: Patrick McCann
• 金额: $ 21万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-01 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9802396&HistoricalAwards=false
• 关键词: New; Materials; Methods; Tunable; Mid

9802396 McCann This project covers the growth, characterization, and processing of IV-VI semiconductor layers grown by both liquid phase epitaxy (LPE) and molecular beam epitaxy (MBE) on silicon substrates to provide the materials science basis for improvements in mid-IR lasers. Owing to a large band gap dependence on temperature, lasers made from IV-VI semiconductors have tuning ranges of several hundred wavenumbers in the mid-infrared region, 3 microns to over 20 microns, where most molecules have strong absorption bands. This tunability, an advantage over mid IR lasers based on quantum cascade technology, and the expected improvement in cw operating temperatures using lift-off fabrication methods make IV-VI semiconductors attractive materials for enhanced mid-IR laser performance. This research seeks fundamental understanding of strain relaxation in highly thermal expansion mismatched epitaxial layers, work that can lead to the integration of compound semiconductor devices on silicon substrates. It is also expected to lead to the development of a new materials technology that can dramatically improve maximum operating temperatures of mid-IR lasers. The project is co-supported by the DMR Electronic Materials Program and the EPSCoR program. %%% The project addresses basic research issues in a topical area of materials science having high potential technological relevance. The research will contribute basic materials science knowledge at a fundamental level to new aspects of electronic/photonic devices. The basic knowledge and understanding gained from the research is expected to contribute to improving the performance and stability of advanced devices by providing a fundamental understanding and a basis for designing and producing improved materials, and materials combinations. A direct benefit of this research is that it will enable the development of user friendly mid-IR laser spectrometers, instruments that can be used in a variety of applications includ ing air pollution monitoring, real-time process control, and medical diagnostics. An important feature of the program is the integration of research and education through the training of students in a fundamentally and technologically significant area. ***

小行星9802396 该项目涵盖了在硅衬底上通过液相外延（LPE）和分子束外延（MBE）生长的IV-VI半导体层的生长，表征和加工，为中红外激光器的改进提供材料科学基础。由于大的带隙依赖于温度，由IV-VI族半导体制成的激光器在中红外区域具有数百个波数的调谐范围，3微米到超过20微米，其中大多数分子具有强吸收带。这种可调谐性，基于量子级联技术的中红外激光器的优势，以及使用剥离制造方法的cw工作温度的预期改善，使得IV-VI半导体成为增强中红外激光器性能的有吸引力的材料。本研究旨在从根本上理解高度热膨胀失配外延层中的应变弛豫，这项工作可以导致在硅衬底上集成化合物半导体器件。它还有望导致一种新材料技术的开发，该技术可以显着提高中红外激光器的最高工作温度。该项目由DMR电子材料计划和EPSCoR计划共同支持。 该项目解决了材料科学领域的基础研究问题，具有很高的潜在技术相关性。 该研究将为电子/光子器件的新方面提供基础材料科学知识。从研究中获得的基本知识和理解预计将有助于提高先进设备的性能和稳定性，为设计和生产改进的材料和材料组合提供基本的理解和基础。这项研究的一个直接好处是，它将使用户友好的中红外激光光谱仪，可用于各种应用，包括空气污染监测，实时过程控制和医疗诊断仪器的发展。该计划的一个重要特点是通过在一个基本和技术上重要的领域对学生进行培训来整合研究和教育。 ***