Computational modelling of solid-state terahertz lasers

Terahertz (THz) radiation has the potential to revolutionise the fields of security, medicine and numerous industries, through its application in imaging and spectroscopy. While the applications potential for this technology are immense, there is a significant lack of cost-effective and compact THz radiation sources. At Macquarie University, we are developing frequency-tunable solid-state THz lasers based on stimulated polariton scattering (SPS) inside the resonator of a conventional Nd laser.

While the architecture of these lasers is relatively simple, sharing many similarities with the ubiquitous green laser pointer, the underlying physics behind their operation is quite complex. We are seeking to develop a numerical model for our lasers that can describe aspects of the laser performance, inform future design improvements, and evaluate the potential of various nonlinear SPS crystals.

The project will involve the acquisition of spectral data for the nonlinear SPS crystals of interest, the development of a computational model for laser performance, and the validation of the model through comparison with experiment. Once validated, the model will be applied to predict the performance of lasers incorporating different SPS crystals, novel resonator designs and so on.

This project will lead to development of new theories pertaining to SPS lasers, and explore opportunities by which the performance of our experimental laser systems can be improved. There is significant scope for publication of outcomes in the form of journal papers, conference presentations, and potentially patent applications. Engagement with our industry partners and end uses will be encouraged.

Prospective applicants must have a Masters Degree which incorporates at least 1 year of research project work, or equivalent, to be eligible for candidature.