Zhuo Yue
https://uwspace.uwaterloo.ca/handle/10012/14514
This thesis reports a new terahertz (đť‘“=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 metal grating and novel patch antenna structure. Among all the terahertz detectors, terahertz quantum well photodetector (THz QWP), has proved its fast optical response speed and remarkable sensitivity and shown great potential for applications in security, bio-medical technology and space communication. However, due to high requirements in experiment condition and growth quality, THz QWPs absorbed at 3 THz or lower have not been much developed yet. Furthermore, THz QWP working around 3 THz can be combined with one of the strongest terahertz emitters, terahertz quantum cascade laser (THz QCL), for ultrafast spectroscopy and imaging applications.
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