Browsing Theses by Subject "Terahertz"
Now showing items 1-12 of 12
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Comparative Study and Analysis of THz Pulse and Continuous-wave Imaging towards Medical Application
(University of Waterloo, 2009-08-27)Until recently, there had been a gap between the output frequencies of electronic and optical sources, which included waves of frequencies around 300 GHz to 3 THz and was known as the Terahertz gap. After the development ... -
Design, Analysis, and Characterization of Indirectly-pumped Terahertz Quantum Cascade Lasers
(University of Waterloo, 2013-09-26)Quantum cascade laser (QCL), as a unipolar semiconductor laser based on intersubband transitions in quantum wells, covers a large portion of the Mid and Far Infrared electromagnetic spectrum. The frequency of the optical ... -
Design, Simulation and Fabrication of Photonic Crystal Slab Waveguide Based Polarization Processors
(University of Waterloo, 2009-05-22)The Photonic Crystal (PC) is a potential candidate for a compact optical integrated circuit on a solid state platform. The fabrication process of a PC is compatible with CMOS technology; thus, it could be potentially ... -
Development of Terahertz Quantum Cascade Lasers with Novel Quantum Designs
(University of Waterloo, 2021-06-01)Terahertz (THz) quantum cascade lasers (QCLs) are arguably the most promising THz radiation source, as they have high output power and efficiency. The main limitation of THz QCLs is the need of a cooling system due to the ... -
Fusing Terahertz and Mid Infrared Technologies to Recycle E-waste Black Plastics
(University of Waterloo, 2022-08-22)Plastic is a unique material, it is lightweight, resilient, non-reactive, waterproof, and low-cost. Due to its versatility and use in everyday products and consumption, it has become a huge environmental concern. In 2015, ... -
Graphene travelling wave amplifier for integrated millimeter-wave/terahertz systems
(University of Waterloo, 2018-10-09)Terahertz (THz) technology offers exciting possibilities for various applications, including high resolution biomedical imaging, long-wavelength spectroscopy, security monitoring, communications, quality control, and process ... -
Hybrid Spectral Ray Tracing Method for Multi-scale Millimeter-wave and Photonic Propagation Problems
(University of Waterloo, 2011-10-04)This thesis presents an efficient self-consistent Hybrid Spectral Ray Tracing (HSRT) technique for analysis and design of multi-scale sub-millimeter wave problems, where sub-wavelength features are modeled using rigorous ... -
A New Silicon-Based Dielectric Waveguide Technology for Millimeter-Wave/Terahertz Devices and Integrated Systems
(University of Waterloo, 2015-01-19)In recent decades, the millimeter-Wave (mmWave)/THz band has attracted great attention in the research community. The Terahertz frequency band runs from approximately 300 GHz to 3 THz, an incredible 2700 GHz of bandwidth. ... -
Terahertz Quantum Cascade Lasers: towards high performance operation
(University of Waterloo, 2010-08-16)Terahertz (THz) frequency range (wavelength of 300-30 μm, frequency of 1-10 THz and photon energy of ~4-40meV), the gap between infrared and microwave electromagnetic waves, have remained relatively unexplored for a long ... -
Terahertz Surface Plasmon Polariton-like Surface Waves for Sensing Applications
(University of Waterloo, 2009-07-30)Surface plasmon polaritons are electromagnetic surface waves coupled to electron plasma oscillation of metals at a metal-dielectric interface. At optical frequencies, these modes are of great interest because of their high ... -
Theory, Design and Development of Resonance Based Biosensors in Terahertz and Millimeter-wave
(University of Waterloo, 2009-11-30)Recent advances in molecular biology and nanotechnology have enabled scientists to study biological systems at molecular and atomic scales. This level of sophistication demands for new technologies to emerge for providing ... -
Toward High Performance Broad-band Frequency Comb Operation of Terahertz Quantum Cascade Lasers
(University of Waterloo, 2017-05-16)Recent advances in Terahertz Quantum Cascade Laser (THz QCL) development are pushing this technology ever closer to practical application, particularly within the spectroscopic field. For this reason, optimizing the operation ...