Professor of Electronic and Photonic Engineering
University of Leeds
A major theme has been the development of on-chip terahertz systems, which provide a versatile way to confine THz radiation to length-scales far below the diffraction limit of free-space propagating THz radiation. We have used these techniques to develop many spectroscopy, imaging, and sensing applications, including low temperature THz spectroscopy of polycrystalline chemicals, the modulation and detection of plasmons and magnetoplasmons in 2D electron gases, and the scanned imaging of semiconductors. I also work on new ways to achieve cryogenic terahertz measurements; here, we have coupled light from a THz QCL into the sample space of a dilution refrigerator, alongside low-temperature time-domain THz spectroscopy achieved using fibre coupling.