Browsing Theses by Subject "terahertz"
Now showing items 1-7 of 7
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Development of Terahertz Quantum Well Photodetector at 3 THz
(University of Waterloo, 2019-04-05)This thesis reports a new terahertz (𝑓=3.22 THz) quantum well photodetector (THz QWP) as well as comprehensive numerical models simulating device active region and different grating couplers including traditional diffraction ... -
A Framework to Simulate and Improve Terahertz Quantum Well Photodetectors
(University of Waterloo, 2013-09-04)A wide range of applications have been recognized for terahertz radiations. In fact, medical imaging, homeland security screening, very high-speed wireless telecommunications systems and even drug and gas detection are ... -
Growth of graded quantum wells for THz polaritonics
(University of Waterloo, 2021-09-02)Rectangular quantum wells have long dominated the landscape of layered nanostructures. They exhibit a rich variety of physics and can be reliably grown with techniques such as molecular beam epitaxy. Rectangular wells ... -
Indium Antimonide Plasmonic Nanostructures for Tunable Terahertz Sources
(University of Waterloo, 2022-08-23)In this work, procedures were successfully created and deployed for the development, characterization, and study of indium antimonide nanostructures as well as their terahertz plasmonic response. Using molecular beam ... -
Molecular Beam Epitaxial Growth Optimization for Next Generation Optoelectronic Devices Based on III-V Semiconductors
(University of Waterloo, 2020-09-01)Molecular beam epitaxy (MBE) has been serving as the best tool for group III-V compound growths due to its capability of depositing epilayers with high single-crystalline quality, high purity and Angstrom-scale thickness ... -
A Novel THz Photoconductive Source and Waveguide Based on One-dimensional Nano-grating
(University of Waterloo, 2013-01-25)A terahertz photoconductive source structure with nano-grating electrodes is proposed. The resonance modes of the one-dimensional nano-grating and their affect the optical power absorption are studied. In addition, an ... -
Theoretical Studies on Terahertz Quantum Cascade Lasers for Device Design Guideline
(University of Waterloo, 2023-01-27)Terahertz (THz) quantum cascade laser (QCL) is the most promising THz light source for the next-generation THz technologies of imaging, spectroscopy, and wireless communication. However, room-temperature operation of THz ...