Terahertz (THz) is a rapidly expanding field with notable importance for a myriad of disciplines such as physics, chemistry and biology. In the overarching field of sensing and imaging, THz radiation is demonstrating unique properties for medical diagnosis, security applications (chemical fingerprinting and standoff screening) and industrial control processes. Unfortunately, due to its millimetre-scale wavelength, resolving features smaller than 100 μm (e.g., biological cells, defects in semiconductors, etc.) is prohibitive with THz free-space radiation. Such tiny dimensions beyond the diffraction limit can be accessed with near-field techniques. Current approaches include time-consuming aperture and scattering SNOMs.
With the aim of realising fast polarisation-resolved subdiffraction imaging, this PhD research programme will look at combining spintronic THz emitters and single-pixel imaging. The PhD student will carry out specifically the following tasks: design, modelling, implementation, and calibration of the THz near-field imaging system along with developing the suitable image-processing algorithm. The last phase of the project will involve automation of the image acquisition (hardware and software). Other activities supporting the study will also be carried out when required.
We expect the PhD candidate to develop the expertise required to lead an experimental research project, to train students, to interact with colleagues with different backgrounds (physics and engineering) and from different disciplines (i.e., electromagnetism, microwave engineering, material science, optics). Details of the project will be agreed with the interested candidates to tailor the research on his/her interests.
The research programme will take place in an international and interdisciplinary environment, which will substantially favour collaborative opportunities.
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