A customized terahertz time-domain spectroscopy system for phase-resolved measurements of active semiconductor quantum devices

用于有源半导体量子器件相位分辨测量的定制太赫兹时域光谱系统

• 批准号: 407762-2011
• 负责人: Ban, Dayan
• 金额: $ 4.26万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=472716
• 关键词: customized; terahertz; time; domain; spectroscopy

The external performance of nanoelectronic and quantum optoelectronic devices such as quantum cascade lasers, semiconductor quantum well photodetectors, semiconductor optical amplifier, etc, is governed by their inner workings as described by modal gain, optical loss, free carrier absorption, carrier transport. Without an experimental means of probing these crucial parameters, the chief mechanisms responsible for sub par device performance remain speculative at best. This award provides essential support for the acquisition of needed components and instruments, in combination with an existing mode-lock Ti:Sapphire laser, to complete a terahertz time-domain spectroscopy (THz-TDS) system. The THz-TDS system will be used to carry out temperature-dependent, phase-resolved, time-resolved measurements of lasing emission from a terahertz quantum cascade laser with a metal-metal waveguide. This home-integrated system will be a very versatile and enabling tool for different research purposes. The proposed system is particularly an indispensible tool for the applicant's ongoing research projects on semiconductor quantum optoelectronic devices. It will provide vital capabilities to our research on: 1) development and characterization of THz quantum cascade lasers; 2) investigation of internal dynamic processes of quantum semiconductor heterostructures; 3) optimization of terahertz quantum cascade lasers for high-temperature and high power operation; 4) exploration of terahertz amplifiers and terahertz detectors based on semiconductor quantum structures. It will significantly leverage our research efforts in developing high-performance semiconductor components for THz imaging, bio- and environmental sensing application. In addition, it will help extend our research into new areas such as nanotechnology and nanoelectronic devices. Not only does the proposed system fit the most demanding research application, it is a great teaching tool for our graduate students and other HQP. The availability of this THz-time-domain spectroscopy system will enrich the research and education opportunities to our undergraduate and graduate students from the engineering programs.

纳米电子和量子光电器件（例如量子级联激光器、半导体量子阱光电探测器、半导体光放大器等）的外部性能受其内部工作原理的影响，如模态增益、光学损耗、自由载流子吸收、载流子传输。如果没有实验手段来探测这些关键参数，导致器件性能低于标准的主要机制最多只能是推测。该奖项为采购所需的组件和仪器提供了必要的支持，并与现有的锁模钛宝石激光器相结合，以完成太赫兹时域光谱 (THz-TDS) 系统。 THz-TDS 系统将用于对带有金属-金属波导的太赫兹量子级联激光器的激光发射进行温度依赖性、相位分辨、时间分辨测量。这个家庭集成系统将是一个非常通用的工具，可用于不同的研究目的。所提出的系统对于申请人正在进行的半导体量子光电器件研究项目来说尤其是不可或缺的工具。它将为我们的研究提供重要的能力：1）太赫兹量子级联激光器的开发和表征； 2）量子半导体异质结构内部动态过程研究； 3）太赫兹量子级联激光器高温高功率运行优化； 4）基于半导体量子结构的太赫兹放大器和太赫兹探测器的探索。它将极大地利用我们在开发用于太赫兹成像、生物和环境传感应用的高性能半导体元件方面的研究成果。此外，它将有助于将我们的研究扩展到纳米技术和纳米电子器件等新领域。所提出的系统不仅适合最苛刻的研究应用，而且对于我们的研究生和其他 HQP 来说也是一个很好的教学工具。该太赫兹时域光谱系统的可用性将丰富我们工程项目的本科生和研究生的研究和教育机会。