Tunable Continuous Wave THz Source Based on a Room Temperature Quantum Cascade Laser

基于室温量子级联激光器的可调谐连续波太赫兹源

• 批准号: 1306397
• 负责人: Manijeh Razeghi
• 金额: $ 35.94万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-06-15 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1306397&HistoricalAwards=false
• 关键词: Tunable; Continuous; Wave; THz; Source

Objective: The objective of this program is to create a compact, efficient, and tunable continuous wave THz light source at room temperature. This will be accomplished by creating a monolithic, two-frequency, mid-infrared, tunable laser with a built-in nonlinearity. High power, tunable THz radiation will be emitted via difference frequency generation, and the packaging will be optimized for thermal management and collection of phase-matched THz output.Intellectual Merit: The intellectual merit of this project lies in developing the core technologies and integration processes necessary to produce a multi-functional monolithic THz emitter. The various research topics necessary include modeling of intersubband gain, nonlinearity, and transport , thermal management, laser cavity nonlinearities, and efficient free space coupling of THz radiation. Successful integration onto a common platform will play a transformative role in the further development of multi-functional mid-infrared and THz optoelectronic integrated circuits. Broader Impacts: The broader impacts of this work will impact both scientific infrastructure and education. First, the small size of this source and potential for mass production may represent a future enabling technology for widespread access to the THz spectral region. This type of THz source has numerous applications in basic science, as well as in explosive and drug detection, security screening (T-ray imaging), astronomy/ astrophysics, and medical imaging. Progress in source development will be published and accessible to the general scientific community. Finally, aspects of the research will be used as classroom examples at Northwestern University and provide secondary research opportunities for undergraduates and local high school students.

目的：本计划的目标是建立一个紧凑，高效，可调谐的连续波太赫兹光源在室温下。 这将通过创建一个单片，双频，中红外，可调谐激光器与内置的非线性来实现。 高功率、可调谐的太赫兹辐射将通过差频发生器发射，并且封装将被优化用于热管理和相位匹配的太赫兹输出的收集。智力价值：该项目的智力价值在于开发生产多功能单片太赫兹发射器所需的核心技术和集成工艺。 各种必要的研究课题包括建模的子带间增益，非线性，和运输，热管理，激光腔的非线性，和有效的自由空间耦合太赫兹辐射。 成功地集成到一个共同的平台上，将在多功能中红外和太赫兹光电集成电路的进一步发展中发挥变革性的作用。 更广泛的影响：这项工作的更广泛影响将影响科学基础设施和教育。 首先，这种光源的小尺寸和大规模生产的潜力可能代表了未来广泛使用THz光谱区域的技术。 这种类型的太赫兹源在基础科学，以及爆炸物和毒品检测，安全筛选（T射线成像），天文学/天体物理学和医学成像中有许多应用。 源开发方面的进展将予以公布，供一般科学界查阅。 最后，研究的各个方面将用作西北大学的课堂示例，并为本科生和当地高中生提供二次研究机会。