Tunable THz laser source
This research project is in competition for funding with one or more projects available across the EPSRC Doctoral Training Partnership (DTP). Usually the projects which receive the best applicants will be awarded the funding. Find out more information about the DTP and how to apply.
A fully tunable and efficient source of THz radiation is required for a large number of security and medical applications.
This project will involve the design, fabrication and characterisation of such a source, based on the non-linear optical process of difference frequency generation in an integrated semiconductor laser structure.
The PhD will push the boundaries of quantum dot active region design for lasing and non-linear optics, optical coupling design to maximise tunability and introduce new concepts and fabrication strategies for compound semiconductors coupled to Si, which is practically dispersionless in the THz.
The project will be underpinned by a good understanding of optical and semiconductor physics and will lead to the further understanding of the physics of light-matter interactions, ultrafast laser physics and characterisation techniques. T
his is an opportunity to exploit and develop desirable skills in experimental physics and in semiconductor device fabrication. The project background, and the materials and device development which form the core of the programme also has strong relevance to a number of other highly topical areas.
Project aims and methods
You will integrate with the EPSRC funded Future Compound Semiconductor Manufacturing Hub (CS Hub) research team and the Astronomy Instrumentation Group (AIG), comprising post-doctoral research associates, technicians and senior staff at Cardiff University, as well as making use of Institute for Compound Semiconductors (ICS) facilities.
The project will follow a flexible timeline with completion feasible within 3.5 years (including 0.5 year contingency with the first year including a literature study and the development of suitable experimental and computational skills. The remainder of the PhD will include device development, device demonstrations and assessment and completion of the thesis.
You will integrate with the CS Hub research team comprising post-doctoral research associates, technicians and senior staff at Cardiff University, and utilise Institute for Compound Semiconductors (ICS) facilities.
You should have a strong background and interest in optics/photonics and semiconductor physics.