A state-of-the-art terahertz quantum device characterization platform

点击翻译按钮获取中文摘要

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 urgently-needed components and instruments to complete and upgrade a semiconductor quantum device characterization platform. This platform will be used to carry out electrical, optical, spectral, temporal and temperature-dependent measurements of terahertz quantum devices. This customized system will serve as a versatile and enabling tool for multiple research activities, becoming an integrated part of the recently-built and state-of-the-art Quantum-Nano Center at the University of Waterloo. The proposed system is particularly indispensible for the applicants' 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 (above 230K) operation; 4) exploration of terahertz amplifiers and terahertz detectors based on semiconductor quantum structures. Ultimately, it will allow us to advance our efforts towards development of high-performance semiconductor components for THz imaging, THz communication, bio- and environmental sensing applications. 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 requirements, it is a great teaching tool for our graduate students and other HQP, which is important to prepare qualified workforce for Canadian high-tech industries. This advanced device characterization platform will enrich our research and education opportunities.